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-rwxr-xr-xcompress.sh4
-rw-r--r--euler/euler.css38
-rw-r--r--euler/pe_minimal_problems.csv887
-rw-r--r--euler/stats.html1003
-rw-r--r--euler/update_table.py72
-rw-r--r--index.html2
-rw-r--r--style.css11
7 files changed, 2016 insertions, 1 deletions
diff --git a/compress.sh b/compress.sh
index 3e667cd..f4bbac4 100755
--- a/compress.sh
+++ b/compress.sh
@@ -1,5 +1,9 @@
#!/usr/local/bin/bash
gzip -5fk style.css
+gzip -5fk euler/euler.css
+
gzip -7fk *.html
+gzip -7fk euler/*.html
+
find assets/ -type f -not -name "*.gz" -exec gzip -4fk "{}" \;
diff --git a/euler/euler.css b/euler/euler.css
new file mode 100644
index 0000000..cd2a021
--- /dev/null
+++ b/euler/euler.css
@@ -0,0 +1,38 @@
+.scrollable-table {
+ overflow-x: auto;
+ width: 100%;
+}
+
+table.progress {
+ margin: 1em;
+}
+table.progress td {
+ text-align: center;
+ border: 1px solid #000000;
+ padding: 0;
+ width: 2.2em;
+}
+table.progress td * {
+ display: block;
+ border: 2px solid transparent;
+ width: 2em;
+}
+table.progress a {
+ color: inherit;
+ text-decoration: none;
+}
+table.progress a:hover {
+ border: 2px solid #ff6347;
+}
+
+td.open {
+ background: lightgrey;
+ color: black;
+ padding: 0 0.2em;
+}
+td.completed {
+ background: green;
+ color: white;
+ padding: 0 0.2em;
+ font-weight: bold;
+}
diff --git a/euler/pe_minimal_problems.csv b/euler/pe_minimal_problems.csv
new file mode 100644
index 0000000..7310995
--- /dev/null
+++ b/euler/pe_minimal_problems.csv
@@ -0,0 +1,887 @@
+"ID","Description","Published","Solved By","Solve Status"
+1,"Multiples of 3 or 5",1002301200,994767,1
+2,"Even Fibonacci Numbers",1003510800,793361,1
+3,"Largest Prime Factor",1004724000,571429,1
+4,"Largest Palindrome Product",1005933600,505594,1
+5,"Smallest Multiple",1007143200,508489,1
+6,"Sum Square Difference",1008352800,511778,1
+7,"10001st Prime",1009562400,438054,1
+8,"Largest Product in a Series",1010772000,367372,1
+9,"Special Pythagorean Triplet",1011981600,372417,1
+10,"Summation of Primes",1013191200,341713,1
+11,"Largest Product in a Grid",1014400800,245684,1
+12,"Highly Divisible Triangular Number",1015610400,232214,1
+13,"Large Sum",1016820000,237513,1
+14,"Longest Collatz Sequence",1018026000,237924,1
+15,"Lattice Paths",1019235600,196653,1
+16,"Power Digit Sum",1020445200,240163,1
+17,"Number Letter Counts",1021654800,159820,1
+18,"Maximum Path Sum I",1022864400,153051,1
+19,"Counting Sundays",1024074000,142124,1
+20,"Factorial Digit Sum",1024678800,207933,1
+21,"Amicable Numbers",1025888400,154318,1
+22,"Names Scores",1027098000,141912,1
+23,"Non-Abundant Sums",1028307600,110631,1
+24,"Lexicographic Permutations",1029517200,121363,1
+25,"$1000$-digit Fibonacci Number",1030726800,163651,1
+26,"Reciprocal Cycles",1031936400,89472,1
+27,"Quadratic Primes",1033146000,92909,1
+28,"Number Spiral Diagonals",1034355600,114027,1
+29,"Distinct Powers",1035565200,111741,1
+30,"Digit Fifth Powers",1036778400,116264,1
+31,"Coin Sums",1037988000,90577,1
+32,"Pandigital Products",1039197600,75981,1
+33,"Digit Cancelling Fractions",1040407200,76299,1
+34,"Digit Factorials",1041616800,99789,1
+35,"Circular Primes",1042826400,89860,1
+36,"Double-base Palindromes",1044036000,94020,1
+37,"Truncatable Primes",1045245600,78224,1
+38,"Pandigital Multiples",1046455200,67182,1
+39,"Integer Right Triangles",1047664800,77780,1
+40,"Champernowne's Constant",1048874400,84911,1
+41,"Pandigital Prime",1050080400,72566,1
+42,"Coded Triangle Numbers",1051290000,78908,1
+43,"Sub-string Divisibility",1052499600,63914,1
+44,"Pentagon Numbers",1053709200,62546,1
+45,"Triangular, Pentagonal, and Hexagonal",1054918800,75260,1
+46,"Goldbach's Other Conjecture",1056128400,65743,1
+47,"Distinct Primes Factors",1057338000,61941,1
+48,"Self Powers",1058547600,118050,1
+49,"Prime Permutations",1059757200,61805,1
+50,"Consecutive Prime Sum",1060966800,66623,1
+51,"Prime Digit Replacements",1062176400,36750,0
+52,"Permuted Multiples",1063386000,69252,1
+53,"Combinatoric Selections",1064595600,62593,1
+54,"Poker Hands",1065805200,38781,0
+55,"Lychrel Numbers",1067014800,57249,1
+56,"Powerful Digit Sum",1068228000,61846,1
+57,"Square Root Convergents",1069437600,44608,1
+58,"Spiral Primes",1070647200,43037,1
+59,"XOR Decryption",1071856800,43998,0
+60,"Prime Pair Sets",1073066400,29060,0
+61,"Cyclical Figurate Numbers",1074276000,27595,0
+62,"Cubic Permutations",1075485600,33984,0
+63,"Powerful Digit Counts",1076695200,46091,0
+64,"Odd Period Square Roots",1077904800,23973,0
+65,"Convergents of $e$",1079114400,32149,0
+66,"Diophantine Equation",1080324000,21380,0
+67,"Maximum Path Sum II",1081530000,100857,0
+68,"Magic 5-gon Ring",1082739600,22474,0
+69,"Totient Maximum",1083949200,37428,0
+70,"Totient Permutation",1085158800,24145,0
+71,"Ordered Fractions",1086368400,31438,0
+72,"Counting Fractions",1087578000,24180,0
+73,"Counting Fractions in a Range",1088787600,26900,0
+74,"Digit Factorial Chains",1089997200,28739,0
+75,"Singular Integer Right Triangles",1091206800,19559,0
+76,"Counting Summations",1092416400,30643,0
+77,"Prime Summations",1093626000,20806,0
+78,"Coin Partitions",1094835600,18412,1
+79,"Passcode Derivation",1095440400,43370,0
+80,"Square Root Digital Expansion",1097254800,21434,0
+81,"Path Sum: Two Ways",1098464400,36640,0
+82,"Path Sum: Three Ways",1099677600,22714,0
+83,"Path Sum: Four Ways",1100887200,19641,0
+84,"Monopoly Odds",1102096800,13751,0
+85,"Counting Rectangles",1103306400,26518,0
+86,"Cuboid Route",1105120800,13810,0
+87,"Prime Power Triples",1106330400,22477,0
+88,"Product-sum Numbers",1107540000,11057,0
+89,"Roman Numerals",1108749600,22636,0
+90,"Cube Digit Pairs",1109959200,12318,0
+91,"Right Triangles with Integer Coordinates",1111168800,16709,0
+92,"Square Digit Chains",1112374800,44145,1
+93,"Arithmetic Expressions",1113584400,12861,0
+94,"Almost Equilateral Triangles",1114794000,13525,0
+95,"Amicable Chains",1116003600,15564,0
+96,"Su Doku",1117213200,18513,0
+97,"Large Non-Mersenne Prime",1118422800,45689,0
+98,"Anagramic Squares",1119027600,12396,0
+99,"Largest Exponential",1120237200,32642,0
+100,"Arranged Probability",1121446800,17673,0
+101,"Optimum Polynomial",1122656400,12524,0
+102,"Triangle Containment",1123866000,23464,0
+103,"Special Subset Sums: Optimum",1125075600,8771,0
+104,"Pandigital Fibonacci Ends",1126285200,17336,0
+105,"Special Subset Sums: Testing",1127494800,8743,0
+106,"Special Subset Sums: Meta-testing",1128704400,6980,1
+107,"Minimal Network",1129914000,11828,0
+108,"Diophantine Reciprocals I",1131127200,13587,0
+109,"Darts",1132336800,8816,0
+110,"Diophantine Reciprocals II",1133546400,8739,0
+111,"Primes with Runs",1134756000,7855,0
+112,"Bouncy Numbers",1135965600,26200,0
+113,"Non-bouncy Numbers",1139594400,11879,0
+114,"Counting Block Combinations I",1140199200,11645,0
+115,"Counting Block Combinations II",1140804000,10636,0
+116,"Red, Green or Blue Tiles",1141408800,12964,0
+117,"Red, Green, and Blue Tiles",1142013600,11937,0
+118,"Pandigital Prime Sets",1143223200,7560,0
+119,"Digit Power Sum",1144429200,13216,0
+120,"Square Remainders",1145638800,14733,0
+121,"Disc Game Prize Fund",1148058000,10427,0
+122,"Efficient Exponentiation",1149267600,8443,0
+123,"Prime Square Remainders",1150477200,12322,0
+124,"Ordered Radicals",1152896400,14580,0
+125,"Palindromic Sums",1154710800,14471,0
+126,"Cuboid Layers",1155920400,5148,0
+127,"abc-hits",1157130000,6755,0
+128,"Hexagonal Tile Differences",1159549200,5417,0
+129,"Repunit Divisibility",1161968400,6772,0
+130,"Composites with Prime Repunit Property",1161968400,6366,0
+131,"Prime Cube Partnership",1163181600,7927,0
+132,"Large Repunit Factors",1164996000,6817,0
+133,"Repunit Nonfactors",1164996000,5955,0
+134,"Prime Pair Connection",1166205600,7537,0
+135,"Same Differences",1167415200,6895,0
+136,"Singleton Difference",1167415200,6139,0
+137,"Fibonacci Golden Nuggets",1168624800,5964,0
+138,"Special Isosceles Triangles",1169290800,6286,0
+139,"Pythagorean Tiles",1169888400,6101,0
+140,"Modified Fibonacci Golden Nuggets",1170486000,4702,0
+141,"Square Progressive Numbers",1171688400,4277,0
+142,"Perfect Square Collection",1172278800,6245,0
+143,"Torricelli Triangles",1172869200,2988,0
+144,"Laser Beam Reflections ",1173459600,6751,0
+145,"Reversible Numbers",1174050000,17679,0
+146,"Investigating a Prime Pattern ",1174726800,5461,0
+147,"Rectangles in Cross-hatched Grids",1175317200,3288,0
+148,"Exploring Pascal's Triangle",1175907600,5540,0
+149,"Maximum-sum Subsequence",1176498000,5210,0
+150,"Sub-triangle Sums",1176498000,4264,0
+151,"A Preference for A5",1177088400,5948,0
+152,"Sums of Square Reciprocals",1177678800,2920,0
+153,"Investigating Gaussian Integers",1178355600,2839,0
+154,"Exploring Pascal's Pyramid",1178946000,2852,0
+155,"Counting Capacitor Circuits",1179536400,3872,0
+156,"Counting Digits",1180126800,2643,0
+157,"Base-10 Diophantine Reciprocal",1180717200,2937,0
+158,"Lexicographical Neighbours",1181912400,3916,0
+159,"Digital Root Sums of Factorisations",1183208400,3531,0
+160,"Factorial Trailing Digits",1189170000,3778,0
+161,"Triominoes",1190394000,2309,0
+162,"Hexadecimal Numbers",1191618000,5719,0
+163,"Cross-hatched Triangles",1192237200,1976,0
+164,"Three Consecutive Digital Sum Limit",1192856400,6126,0
+165,"Intersections",1193475600,2815,0
+166,"Criss Cross",1194094800,4402,0
+167,"Investigating Ulam Sequences",1194613200,1846,0
+168,"Number Rotations",1195232400,2873,0
+169,"Sums of Powers of Two",1195851600,5458,0
+170,"Pandigital Concatenating Products",1196470800,2152,0
+171,"Square Sum of the Digital Squares",1197090000,3006,0
+172,"Few Repeated Digits",1197709200,4074,0
+173,"Hollow Square Laminae I",1198328400,9623,0
+174,"Hollow Square Laminae II",1198328400,6261,0
+175,"Fractions and Sum of Powers of Two",1198846800,1934,0
+176,"Common Cathetus Right-angled Triangles",1199466000,2053,0
+177,"Integer Angled Quadrilaterals",1200085200,1389,0
+178,"Step Numbers",1200704400,3661,0
+179,"Consecutive Positive Divisors",1201323600,11881,0
+180,"Golden Triplets",1201942800,1714,0
+181,"Grouping Two Different Coloured Objects",1202562000,2163,0
+182,"RSA Encryption",1203080400,2791,0
+183,"Maximum Product of Parts",1203699600,4964,0
+184,"Triangles Containing the Origin",1204318800,1784,0
+185,"Number Mind",1204938000,3356,0
+186,"Connectedness of a Network",1205557200,3059,0
+187,"Semiprimes",1206176400,11798,0
+188,"Hyperexponentiation",1207314000,6736,0
+189,"Tri-colouring a Triangular Grid",1207929600,2218,0
+190,"Maximising a Weighted Product",1208552400,4420,0
+191,"Prize Strings",1209168000,7502,0
+192,"Best Approximations",1209787200,1769,0
+193,"Squarefree Numbers",1210420800,3620,0
+194,"Coloured Configurations",1211014800,1522,0
+195,"$60$-degree Triangle Inscribed Circles",1211547600,1515,0
+196,"Prime Triplets",1212166800,2777,0
+197,"A Recursively Defined Sequence",1212786000,5201,0
+198,"Ambiguous Numbers",1213405200,1222,0
+199,"Iterative Circle Packing",1214024400,2101,0
+200,"Prime-proof Squbes",1214643600,2569,0
+201,"Subsets with a Unique Sum",1215262800,2501,0
+202,"Laserbeam",1215262800,2733,0
+203,"Squarefree Binomial Coefficients",1220706000,9636,0
+204,"Generalised Hamming Numbers",1220706000,7760,0
+205,"Dice Game",1220706000,15689,0
+206,"Concealed Square",1220706000,25698,0
+207,"Integer Partition Equations",1220706000,4984,0
+208,"Robot Walks",1221224400,1884,0
+209,"Circular Logic",1221843600,2676,0
+210,"Obtuse Angled Triangles",1222462800,1820,0
+211,"Divisor Square Sum",1223082000,4461,0
+212,"Combined Volume of Cuboids",1223701200,1487,0
+213,"Flea Circus",1224320400,2498,0
+214,"Totient Chains",1224939600,5530,0
+215,"Crack-free Walls",1225458000,3901,0
+216,"The Primality of $2n^2 - 1$",1226077200,4359,0
+217,"Balanced Numbers",1226696400,1620,0
+218,"Perfect Right-angled Triangles",1227315600,3202,0
+219,"Skew-cost Coding",1227934800,1574,0
+220,"Heighway Dragon",1228554000,2304,0
+221,"Alexandrian Integers",1229173200,2239,0
+222,"Sphere Packing",1229691600,2220,0
+223,"Almost Right-angled Triangles I",1230310800,1645,0
+224,"Almost Right-angled Triangles II",1230310800,1332,0
+225,"Tribonacci Non-divisors",1230310800,4723,0
+226,"A Scoop of Blancmange",1230930000,1855,0
+227,"The Chase",1231549200,2255,0
+228,"Minkowski Sums",1232168400,1421,0
+229,"Four Representations Using Squares",1232787600,1569,0
+230,"Fibonacci Words",1233406800,3035,0
+231,"Prime Factorisation of Binomial Coefficients",1233925200,5766,0
+232,"The Race",1234544400,1914,0
+233,"Lattice Points on a Circle",1235163600,2486,0
+234,"Semidivisible Numbers",1235782800,3435,0
+235,"An Arithmetic Geometric Sequence",1236402000,5252,0
+236,"Luxury Hampers",1237021200,1011,0
+237,"Tours on a $4 \times N$ Playing Board",1237640400,1685,0
+238,"Infinite String Tour",1238335200,1036,0
+239,"Twenty-two Foolish Primes",1238774400,1934,0
+240,"Top Dice",1239397200,2324,0
+241,"Perfection Quotients",1240016400,999,0
+242,"Odd Triplets",1240635600,1114,0
+243,"Resilience",1241254800,10077,0
+244,"Sliders",1241874000,1409,0
+245,"Coresilience",1242392400,881,0
+246,"Tangents to an Ellipse",1243008000,867,0
+247,"Squares Under a Hyperbola",1243627200,1571,0
+248,"Euler's Totient Function Equals 13!",1244246400,1392,0
+249,"Prime Subset Sums",1244865600,2698,0
+250,"$250250$",1244865600,3177,0
+251,"Cardano Triplets",1245484800,1490,0
+252,"Convex Holes",1246104000,904,0
+253,"Tidying Up A",1251460800,1107,0
+254,"Sums of Digit Factorials",1252080000,1037,0
+255,"Rounded Square Roots",1252699200,932,0
+256,"Tatami-Free Rooms",1253318400,787,0
+257,"Angular Bisectors",1253937600,745,0
+258,"A Lagged Fibonacci Sequence",1254556800,1712,0
+259,"Reachable Numbers",1255176000,1613,0
+260,"Stone Game",1255694400,1407,0
+261,"Pivotal Square Sums",1256313600,742,0
+262,"Mountain Range",1256936400,771,0
+263,"An Engineers' Dream Come True",1257555600,1119,0
+264,"Triangle Centres",1258174800,611,0
+265,"Binary Circles",1258794000,4442,0
+266,"Pseudo Square Root",1259413200,1810,0
+267,"Billionaire",1259931600,3615,0
+268,"At Least Four Distinct Prime Factors Less Than 100",1260550800,1553,0
+269,"Polynomials with at Least One Integer Root",1261213200,747,0
+270,"Cutting Squares",1261789200,682,0
+271,"Modular Cubes, Part 1",1262408400,2538,0
+272,"Modular Cubes, Part 2",1262408400,1058,0
+273,"Sum of Squares",1263042000,1473,0
+274,"Divisibility Multipliers",1263560400,1510,0
+275,"Balanced Sculptures",1264179600,654,0
+276,"Primitive Triangles",1264798800,1163,0
+277,"A Modified Collatz Sequence",1265418000,3418,0
+278,"Linear Combinations of Semiprimes",1266037200,1108,0
+279,"Triangles with Integral Sides and an Integral Angle ",1266656400,797,0
+280,"Ant and Seeds",1267275600,1120,0
+281,"Pizza Toppings",1267794000,1048,0
+282,"The Ackermann Function",1268413200,1093,0
+283,"Integer Sided Triangles with Integral Area/perimeter Ratio",1269032400,675,0
+284,"Steady Squares",1269651600,1344,0
+285,"Pythagorean Odds",1270267200,1302,0
+286,"Scoring Probabilities",1270267200,2270,0
+287,"Quadtree Encoding (a Simple Compression Algorithm)",1270886400,1544,0
+288,"An Enormous Factorial",1271505600,1769,0
+289,"Eulerian Cycles",1272024000,529,0
+290,"Digital Signature",1272643200,1043,0
+291,"Panaitopol Primes",1273262400,1541,0
+292,"Pythagorean Polygons",1273881600,609,0
+293,"Pseudo-Fortunate Numbers",1274500800,3154,0
+294,"Sum of Digits - Experience #23",1275120000,986,0
+295,"Lenticular Holes",1275739200,490,0
+296,"Angular Bisector and Tangent",1276257600,636,0
+297,"Zeckendorf Representation",1276876800,2934,0
+298,"Selective Amnesia",1277496000,715,0
+299,"Three Similar Triangles",1278115200,664,0
+300,"Protein Folding",1283601600,1185,0
+301,"Nim",1284217200,6887,0
+302,"Strong Achilles Numbers",1284832800,797,0
+303,"Multiples with Small Digits",1285448400,3841,0
+304,"Primonacci",1286064000,2335,0
+305,"Reflexive Position",1286679600,647,0
+306,"Paper-strip Game",1287295200,1298,0
+307,"Chip Defects",1287910800,1759,0
+308,"An Amazing Prime-generating Automaton",1288440000,821,0
+309,"Integer Ladders",1289059200,878,0
+310,"Nim Square",1289674800,1239,0
+311,"Biclinic Integral Quadrilaterals",1290290400,459,0
+312,"Cyclic Paths on Sierpiński Graphs",1290906000,898,0
+313,"Sliding Game",1291521600,1712,0
+314,"The Mouse on the Moon",1292137200,553,0
+315,"Digital Root Clocks",1292752800,3590,0
+316,"Numbers in Decimal Expansions",1293282000,709,0
+317,"Firecracker",1293897600,2843,0
+318,"2011 Nines",1293897600,994,0
+319,"Bounded Sequences",1294513200,429,0
+320,"Factorials Divisible by a Huge Integer",1295128800,931,0
+321,"Swapping Counters",1295744400,1836,0
+322,"Binomial Coefficients Divisible by 10",1296360000,493,0
+323,"Bitwise-OR Operations on Random Integers",1296975600,4125,0
+324,"Building a Tower",1297591200,749,0
+325,"Stone Game II",1298120400,652,0
+326,"Modulo Summations",1298736000,566,0
+327,"Rooms of Doom",1299351600,1198,0
+328,"Lowest-cost Search",1299967200,473,0
+329,"Prime Frog",1300582800,2665,0
+330,"Euler's Number",1301198400,569,0
+331,"Cross Flips",1301814000,447,0
+332,"Spherical Triangles",1302426000,654,0
+333,"Special Partitions",1302955200,1325,0
+334,"Spilling the Beans",1303570800,508,0
+335,"Gathering the Beans",1303570800,547,0
+336,"Maximix Arrangements",1304186400,2199,0
+337,"Totient Stairstep Sequences",1304802000,560,0
+338,"Cutting Rectangular Grid Paper",1305417600,351,0
+339,"Peredur Fab Efrawg",1306033200,600,0
+340,"Crazy Function",1306648800,1182,0
+341,"Golomb's Self-describing Sequence",1307264400,990,0
+342,"The Totient of a Square Is a Cube",1307793600,855,0
+343,"Fractional Sequences",1308409200,1490,0
+344,"Silver Dollar Game",1309024800,348,0
+345,"Matrix Sum",1315062000,6043,0
+346,"Strong Repunits",1315062000,4615,0
+347,"Largest Integer Divisible by Two Primes",1315062000,4868,0
+348,"Sum of a Square and a Cube",1315062000,3238,0
+349,"Langton's Ant",1315062000,2041,0
+350,"Constraining the Least Greatest and the Greatest Least",1315677600,502,0
+351,"Hexagonal Orchards",1316293200,2722,0
+352,"Blood Tests",1317513600,647,0
+353,"Risky Moon",1318129200,521,0
+354,"Distances in a Bee's Honeycomb ",1318744800,475,0
+355,"Maximal Coprime Subset",1319360400,566,0
+356,"Largest Roots of Cubic Polynomials",1319889600,635,0
+357,"Prime Generating Integers",1320508800,8647,0
+358,"Cyclic Numbers",1321124400,1713,0
+359,"Hilbert's New Hotel",1321740000,1617,0
+360,"Scary Sphere",1322355600,620,0
+361,"Subsequence of Thue-Morse Sequence",1322971200,328,0
+362,"Squarefree Factors",1323586800,504,0
+363,"Bézier Curves",1324202400,1189,0
+364,"Comfortable Distance",1324731600,749,0
+365,"A Huge Binomial Coefficient",1325347200,1358,0
+366,"Stone Game III",1325962800,729,0
+367,"Bozo Sort",1326578400,549,0
+368,"A Kempner-like Series",1327194000,579,0
+369,"Badugi",1327809600,492,0
+370,"Geometric Triangles",1328425200,564,0
+371,"Licence Plates",1329040800,1737,0
+372,"Pencils of Rays",1329570000,428,0
+373,"Circumscribed Circles",1330185600,365,0
+374,"Maximum Integer Partition Product",1330801200,724,0
+375,"Minimum of Subsequences",1331416800,945,0
+376,"Nontransitive Sets of Dice",1332032400,300,0
+377,"Sum of Digits - Experience #13",1332648000,772,0
+378,"Triangle Triples",1333260000,932,0
+379,"Least Common Multiple Count",1333879200,554,0
+380,"Amazing Mazes!",1334408400,542,0
+381,"$(\text{prime}-k)$ Factorial",1335024000,4538,0
+382,"Generating Polygons",1335639600,357,0
+383,"Divisibility Comparison Between Factorials",1336255200,504,0
+384,"Rudin-Shapiro Sequence",1336870800,352,0
+385,"Ellipses Inside Triangles",1337486400,302,0
+386,"Maximum Length of an Antichain",1338102000,792,0
+387,"Harshad Numbers",1338717600,4950,0
+388,"Distinct Lines",1339246800,625,0
+389,"Platonic Dice",1339862400,1635,0
+390,"Triangles with Non Rational Sides and Integral Area",1340478000,597,0
+391,"Hopping Game",1341093600,285,0
+392,"Enmeshed Unit Circle",1346504400,832,0
+393,"Migrating Ants",1347120000,814,0
+394,"Eating Pie",1347735600,568,0
+395,"Pythagorean Tree",1348351200,733,0
+396,"Weak Goodstein Sequence",1348966800,701,0
+397,"Triangle on Parabola",1349582400,287,0
+398,"Cutting Rope",1350198000,404,0
+399,"Squarefree Fibonacci Numbers",1350813600,608,0
+400,"Fibonacci Tree Game",1351342800,499,0
+401,"Sum of Squares of Divisors",1352563200,2758,0
+402,"Integer-valued Polynomials",1353178800,437,0
+403,"Lattice Points Enclosed by Parabola and Line",1353794400,379,0
+404,"Crisscross Ellipses",1354410000,341,0
+405,"A Rectangular Tiling",1355025600,652,0
+406,"Guessing Game",1355641200,395,0
+407,"Idempotents",1356256800,2618,0
+408,"Admissible Paths Through a Grid",1356786000,607,0
+409,"Nim Extreme",1357401600,475,0
+410,"Circle and Tangent Line",1358017200,291,0
+411,"Uphill Paths",1358632800,704,0
+412,"Gnomon Numbering",1359248400,525,0
+413,"One-child Numbers",1359864000,414,0
+414,"Kaprekar Constant",1360479600,305,0
+415,"Titanic Sets",1361095200,337,0
+416,"A Frog's Trip",1361624400,308,0
+417,"Reciprocal Cycles II",1362240000,942,0
+418,"Factorisation Triples",1362855600,732,0
+419,"Look and Say Sequence",1363471200,518,0
+420,"$2 \times 2$ Positive Integer Matrix",1364086800,467,0
+421,"Prime Factors of $n^{15}+1$",1364698800,704,0
+422,"Sequence of Points on a Hyperbola",1365314400,299,0
+423,"Consecutive Die Throws",1365930000,519,0
+424,"Kakuro",1366459200,436,0
+425,"Prime Connection",1367074800,1561,0
+426,"Box-Ball System",1367690400,267,0
+427,"$n$-sequences",1368306000,338,0
+428,"Necklace of Circles",1368921600,265,0
+429,"Sum of Squares of Unitary Divisors",1369537200,2689,0
+430,"Range Flips",1370152800,908,0
+431,"Square Space Silo",1370768400,651,0
+432,"Totient Sum",1371297600,525,0
+433,"Steps in Euclid's Algorithm",1371913200,491,0
+434,"Rigid Graphs",1372528800,352,0
+435,"Polynomials of Fibonacci Numbers",1378566000,1191,0
+436,"Unfair Wager",1379181600,483,0
+437,"Fibonacci Primitive Roots",1379797200,848,0
+438,"Integer Part of Polynomial Equation's Solutions",1380412800,292,0
+439,"Sum of Sum of Divisors",1381028400,414,0
+440,"GCD and Tiling",1381644000,407,0
+441,"The Inverse Summation of Coprime Couples",1382259600,380,0
+442,"Eleven-free Integers",1382788800,415,0
+443,"GCD Sequence",1383408000,1211,0
+444,"The Roundtable Lottery",1384023600,325,0
+445,"Retractions A",1384639200,412,0
+446,"Retractions B",1384639200,390,0
+447,"Retractions C",1384639200,326,0
+448,"Average Least Common Multiple",1385254800,369,0
+449,"Chocolate Covered Candy",1386475200,959,0
+450,"Hypocycloid and Lattice Points",1387090800,203,0
+451,"Modular Inverses",1387706400,1539,0
+452,"Long Products",1388235600,616,0
+453,"Lattice Quadrilaterals",1388851200,230,0
+454,"Diophantine Reciprocals III",1389466800,508,0
+455,"Powers with Trailing Digits",1390082400,770,0
+456,"Triangles Containing the Origin II",1390698000,424,0
+457,"A Polynomial Modulo the Square of a Prime",1391313600,849,0
+458,"Permutations of Project",1391929200,980,0
+459,"Flipping Game",1392544800,251,0
+460,"An Ant on the Move",1393074000,340,0
+461,"Almost Pi",1393689600,1285,0
+462,"Permutation of 3-smooth Numbers",1394305200,339,0
+463,"A Weird Recurrence Relation",1394920800,1166,0
+464,"Möbius Function and Intervals",1395536400,346,0
+465,"Polar Polygons",1396152000,233,0
+466,"Distinct Terms in a Multiplication Table",1396764000,345,0
+467,"Superinteger",1397379600,469,0
+468,"Smooth Divisors of Binomial Coefficients",1397908800,294,0
+469,"Empty Chairs",1398524400,792,0
+470,"Super Ramvok",1399140000,247,0
+471,"Triangle Inscribed in Ellipse",1399755600,231,0
+472,"Comfortable Distance II",1400371200,274,0
+473,"Phigital Number Base",1400986800,771,0
+474,"Last Digits of Divisors",1401602400,441,0
+475,"Music Festival",1402218000,470,0
+476,"Circle Packing II",1402747200,437,0
+477,"Number Sequence Game",1408806000,277,0
+478,"Mixtures",1409421600,203,0
+479,"Roots on the Rise",1410037200,1375,0
+480,"The Last Question",1410652800,613,0
+481,"Chef Showdown",1411268400,260,0
+482,"The Incenter of a Triangle",1411884000,231,0
+483,"Repeated Permutation",1412499600,270,0
+484,"Arithmetic Derivative",1413028800,398,0
+485,"Maximum Number of Divisors",1413644400,1232,0
+486,"Palindrome-containing Strings",1414260000,278,0
+487,"Sums of Power Sums",1414879200,689,0
+488,"Unbalanced Nim",1415494800,248,0
+489,"Common Factors Between Two Sequences",1416110400,267,0
+490,"Jumping Frog",1416726000,321,0
+491,"Double Pandigital Number Divisible by $11$",1417341600,2277,0
+492,"Exploding Sequence",1417870800,379,0
+493,"Under the Rainbow",1418486400,5645,0
+494,"Collatz Prefix Families",1419102000,229,0
+495,"Writing $n$ as the Product of $k$ Distinct Positive Integers",1419717600,323,0
+496,"Incenter and Circumcenter of Triangle",1420333200,329,0
+497,"Drunken Tower of Hanoi",1420948800,582,0
+498,"Remainder of Polynomial Division",1421564400,549,0
+499,"St. Petersburg Lottery",1422180000,357,0
+500,"Problem 500!!!",1422709200,4285,0
+501,"Eight Divisors",1422709200,1463,0
+502,"Counting Castles",1423324800,311,0
+503,"Compromise or Persist",1423940400,337,0
+504,"Square on the Inside",1424556000,3250,0
+505,"Bidirectional Recurrence",1425171600,221,0
+506,"Clock Sequence",1425787200,921,0
+507,"Shortest Lattice Vector",1426402800,228,0
+508,"Integers in Base $i-1$",1427018400,248,0
+509,"Divisor Nim",1427547600,620,0
+510,"Tangent Circles",1428159600,1068,0
+511,"Sequences with Nice Divisibility Properties",1428775200,438,0
+512,"Sums of Totients of Powers",1429390800,1590,0
+513,"Integral Median",1430006400,327,0
+514,"Geoboard Shapes",1430622000,228,0
+515,"Dissonant Numbers",1431237600,490,0
+516,"$5$-smooth Totients",1431853200,1651,0
+517,"A Real Recursion",1432382400,482,0
+518,"Prime Triples and Geometric Sequences",1432998000,1700,0
+519,"Tricoloured Coin Fountains",1433613600,361,0
+520,"Simbers",1434229200,437,0
+521,"Smallest Prime Factor",1434844800,796,0
+522,"Hilbert's Blackout",1435460400,287,0
+523,"First Sort I",1441519200,1053,0
+524,"First Sort II",1441519200,240,0
+525,"Rolling Ellipse",1442134800,524,0
+526,"Largest Prime Factors of Consecutive Numbers",1442664000,329,0
+527,"Randomized Binary Search",1443279600,778,0
+528,"Constrained Sums",1443895200,295,0
+529,"$10$-substrings",1444510800,265,0
+530,"GCD of Divisors",1445126400,482,0
+531,"Chinese Leftovers",1445745600,1212,0
+532,"Nanobots on Geodesics",1446361200,322,0
+533,"Minimum Values of the Carmichael Function",1446976800,348,0
+534,"Weak Queens",1447506000,327,0
+535,"Fractal Sequence",1448121600,304,0
+536,"Modulo Power Identity ",1448737200,310,0
+537,"Counting Tuples",1449352800,668,0
+538,"Maximum Quadrilaterals",1449968400,342,0
+539,"Odd Elimination",1450584000,874,0
+540,"Counting Primitive Pythagorean Triples",1451199600,698,0
+541,"Divisibility of Harmonic Number Denominators",1451815200,222,0
+542,"Geometric Progression with Maximum Sum",1452344400,242,0
+543,"Prime-Sum Numbers",1452960000,733,0
+544,"Chromatic Conundrum",1453575600,271,0
+545,"Faulhaber's Formulas",1454191200,560,0
+546,"The Floor's Revenge",1454806800,247,0
+547,"Distance of Random Points Within Hollow Square Laminae",1455422400,243,0
+548,"Gozinta Chains",1456038000,657,0
+549,"Divisibility of Factorials",1456653600,2887,0
+550,"Divisor Game",1457182800,377,0
+551,"Sum of Digits Sequence",1457798400,495,0
+552,"Chinese Leftovers II",1458414000,465,0
+553,"Power Sets of Power Sets",1459029600,223,0
+554,"Centaurs on a Chess Board",1459641600,254,0
+555,"McCarthy 91 Function",1460257200,738,0
+556,"Squarefree Gaussian Integers",1460872800,265,0
+557,"Cutting Triangles",1461488400,303,0
+558,"Irrational Base",1462017600,267,0
+559,"Permuted Matrices",1462633200,202,0
+560,"Coprime Nim",1463248800,342,0
+561,"Divisor Pairs",1463864400,813,0
+562,"Maximal Perimeter",1464480000,201,0
+563,"Robot Welders",1465095600,350,0
+564,"Maximal Polygons",1465711200,253,0
+565,"Divisibility of Sum of Divisors",1466326800,658,0
+566,"Cake Icing Puzzle",1466856000,192,0
+567,"Reciprocal Games I",1472914800,314,0
+568,"Reciprocal Games II",1472914800,307,0
+569,"Prime Mountain Range",1473530400,417,0
+570,"Snowflakes",1474146000,287,0
+571,"Super Pandigital Numbers",1474761600,1162,0
+572,"Idempotent Matrices",1475377200,358,0
+573,"Unfair Race",1475992800,219,0
+574,"Verifying Primes",1476608400,280,0
+575,"Wandering Robots",1477137600,620,0
+576,"Irrational Jumps",1477753200,247,0
+577,"Counting Hexagons",1478977200,1661,0
+578,"Integers with Decreasing Prime Powers",1479592800,252,0
+579,"Lattice Points in Lattice Cubes",1480208400,177,0
+580,"Squarefree Hilbert Numbers",1480824000,269,0
+581,"$47$-smooth Triangular Numbers",1481439600,915,0
+582,"Nearly Isosceles $120$ Degree Triangles",1482055200,343,0
+583,"Heron Envelopes",1482584400,388,0
+584,"Birthday Problem Revisited",1483200000,224,0
+585,"Nested Square Roots",1483815600,191,0
+586,"Binary Quadratic Form",1484431200,245,0
+587,"Concave Triangle",1485046800,3310,0
+588,"Quintinomial Coefficients",1485662400,463,0
+589,"Poohsticks Marathon",1486278000,215,0
+590,"Sets with a Given Least Common Multiple",1486893600,276,0
+591,"Best Approximations by Quadratic Integers",1487422800,204,0
+592,"Factorial Trailing Digits 2",1488038400,303,0
+593,"Fleeting Medians",1488654000,567,0
+594,"Rhombus Tilings",1489269600,201,0
+595,"Incremental Random Sort",1489885200,659,0
+596,"Number of Lattice Points in a Hyperball",1490497200,381,0
+597,"Torpids",1491112800,183,0
+598,"Split Divisibilities",1491728400,512,0
+599,"Distinct Colourings of a Rubik's Cube",1492257600,325,0
+600,"Integer Sided Equiangular Hexagons",1492873200,645,0
+601,"Divisibility Streaks",1493488800,2162,0
+602,"Product of Head Counts",1494104400,526,0
+603,"Substring Sums of Prime Concatenations",1494720000,455,0
+604,"Convex Path in Square",1495335600,533,0
+605,"Pairwise Coin-Tossing Game",1495951200,889,0
+606,"Gozinta Chains II",1496566800,399,0
+607,"Marsh Crossing",1497096000,1788,0
+608,"Divisor Sums",1497711600,320,0
+609,"$\pi$ Sequences",1504969200,983,0
+610,"Roman Numerals II",1506189600,606,0
+611,"Hallway of Square Steps",1507410000,351,0
+612,"Friend Numbers",1508630400,715,0
+613,"Pythagorean Ant",1509854400,1892,0
+614,"Special Partitions 2",1511074800,321,0
+615,"The Millionth Number with at Least One Million Prime Factors",1512295200,615,0
+616,"Creative Numbers",1513429200,504,0
+617,"Mirror Power Sequence",1514649600,395,0
+618,"Numbers with a Given Prime Factor Sum",1515870000,1099,0
+619,"Square Subsets",1517090400,422,0
+620,"Planetary Gears",1518310800,179,0
+621,"Expressing an Integer as the Sum of Triangular Numbers",1519531200,583,0
+622,"Riffle Shuffles",1520751600,1829,0
+623,"Lambda Count",1521968400,331,0
+624,"Two Heads Are Better Than One",1523102400,666,0
+625,"Gcd Sum",1524322800,658,0
+626,"Counting Binary Matrices",1525543200,235,0
+627,"Counting Products",1526763600,253,0
+628,"Open Chess Positions",1527984000,835,0
+629,"Scatterstone Nim",1529204400,255,0
+630,"Crossed Lines",1530424800,1065,0
+631,"Constrained Permutations",1531645200,200,0
+632,"Square Prime Factors",1532779200,506,0
+633,"Square Prime Factors II",1532779200,335,0
+634,"Numbers of the Form $a^2b^3$",1533999600,650,0
+635,"Subset Sums",1535220000,364,0
+636,"Restricted Factorisations",1536440400,202,0
+637,"Flexible Digit Sum",1537660800,340,0
+638,"Weighted Lattice Paths",1538881200,398,0
+639,"Summing a Multiplicative Function",1540101600,279,0
+640,"Shut the Box",1540720800,380,0
+641,"A Long Row of Dice",1541250000,522,0
+642,"Sum of Largest Prime Factors",1541865600,377,0
+643,"$2$-Friendly",1542481200,642,0
+644,"Squares on the Line",1543096800,171,0
+645,"Every Day Is a Holiday",1543712400,221,0
+646,"Bounded Divisors",1544328000,297,0
+647,"Linear Transformations of Polygonal Numbers",1544943600,458,0
+648,"Skipping Squares",1545559200,300,0
+649,"Low-Prime Chessboard Nim",1546088400,433,0
+650,"Divisors of Binomial Product",1546704000,1738,0
+651,"Patterned Cylinders",1547319600,183,0
+652,"Distinct Values of a Proto-logarithmic Function",1547935200,181,0
+653,"Frictionless Tube",1548550800,333,0
+654,"Neighbourly Constraints",1549166400,365,0
+655,"Divisible Palindromes",1549782000,559,0
+656,"Palindromic Sequences",1550397600,257,0
+657,"Incomplete Words",1550926800,578,0
+658,"Incomplete Words II",1550926800,255,0
+659,"Largest Prime",1551542400,997,0
+660,"Pandigital Triangles",1552158000,320,0
+661,"A Long Chess Match",1552773600,238,0
+662,"Fibonacci Paths",1553389200,841,0
+663,"Sums of Subarrays",1554001200,375,0
+664,"An Infinite Game",1554616800,200,0
+665,"Proportionate Nim",1555232400,263,0
+666,"Polymorphic Bacteria",1555761600,302,0
+667,"Moving Pentagon",1556377200,205,0
+668,"Square Root Smooth Numbers",1556992800,1105,0
+669,"The King's Banquet",1557608400,330,0
+670,"Colouring a Strip",1558224000,355,0
+671,"Colouring a Loop",1558224000,183,0
+672,"One More One",1558839600,280,0
+673,"Beds and Desks",1559455200,330,0
+674,"Solving $\mathcal{I}$-equations",1560070800,182,0
+675,"$2^{\omega(n)}$",1560600000,783,0
+676,"Matching Digit Sums",1561215600,242,0
+677,"Coloured Graphs",1561831200,187,0
+678,"Fermat-like Equations",1567890000,251,0
+679,"Freefarea",1568505600,912,0
+680,"Yarra Gnisrever",1569121200,197,0
+681,"Maximal Area",1569736800,241,0
+682,"$5$-Smooth Pairs",1570352400,280,0
+683,"The Chase II",1570881600,337,0
+684,"Inverse Digit Sum",1571497200,2811,0
+685,"Inverse Digit Sum II",1571497200,212,0
+686,"Powers of Two",1572112800,3594,0
+687,"Shuffling Cards",1572732000,323,0
+688,"Piles of Plates",1573347600,790,0
+689,"Binary Series",1573963200,238,0
+690,"Tom and Jerry",1574578800,219,0
+691,"Long Substring with Many Repetitions",1575194400,282,0
+692,"Siegbert and Jo",1575723600,1376,0
+693,"Finite Sequence Generator",1576339200,299,0
+694,"Cube-full Divisors",1576954800,1042,0
+695,"Random Rectangles",1577570400,219,0
+696,"Mahjong",1578186000,183,0
+697,"Randomly Decaying Sequence",1578801600,597,0
+698,"123 Numbers",1579417200,457,0
+699,"Triffle Numbers",1580032800,197,0
+700,"Eulercoin",1580562000,3494,0
+701,"Random Connected Area",1581177600,364,0
+702,"Jumping Flea",1581793200,169,0
+703,"Circular Logic II",1582408800,327,0
+704,"Factors of Two in Binomial Coefficients",1583024400,961,0
+705,"Total Inversion Count of Divided Sequences",1583640000,449,0
+706,"$3$-Like Numbers",1584255600,581,0
+707,"Lights Out",1584871200,241,0
+708,"Twos Are All You Need",1585400400,326,0
+709,"Even Stevens",1586016000,888,0
+710,"One Million Members",1586631600,1283,0
+711,"Binary Blackboard",1586631600,337,0
+712,"Exponent Difference",1587247200,510,0
+713,"Turán's Water Heating System",1587862800,725,0
+714,"Duodigits",1588478400,736,0
+715,"Sextuplet Norms",1589094000,203,0
+716,"Grid Graphs",1589709600,237,0
+717,"Summation of a Modular Formula",1590238800,508,0
+718,"Unreachable Numbers",1590854400,343,0
+719,"Number Splitting",1591470000,3866,0
+720,"Unpredictable Permutations",1592085600,311,0
+721,"High Powers of Irrational Numbers",1592701200,430,0
+722,"Slowly Converging Series",1593316800,528,0
+723,"Pythagorean Quadrilaterals",1593932400,189,0
+724,"Drone Delivery",1599310800,403,0
+725,"Digit Sum Numbers",1599926400,1095,0
+726,"Falling Bottles",1600542000,204,0
+727,"Triangle of Circular Arcs",1601157600,521,0
+728,"Circle of Coins",1601773200,288,0
+729,"Range of Periodic Sequence",1602388800,175,0
+730,"Shifted Pythagorean Triples",1603004400,187,0
+731,"A Stoneham Number",1603620000,568,0
+732,"Standing on the Shoulders of Trolls",1604149200,217,0
+733,"Ascending Subsequences",1604764800,472,0
+734,"A Bit of Prime",1605380400,333,0
+735,"Divisors of $2n^2$",1605996000,222,0
+736,"Paths to Equality",1606611600,234,0
+737,"Coin Loops",1607227200,367,0
+738,"Counting Ordered Factorisations",1607842800,283,0
+739,"Summation of Summations",1608458400,514,0
+740,"Secret Santa",1608987600,209,0
+741,"Binary Grid Colouring",1609603200,159,0
+742,"Minimum Area of a Convex Grid Polygon",1610218800,165,0
+743,"Window into a Matrix",1610834400,1172,0
+744,"What? Where? When?",1611450000,308,0
+745,"Sum of Squares II",1612065600,1178,0
+746,"A Messy Dinner",1612681200,283,0
+747,"Triangular Pizza",1613296800,202,0
+748,"Upside Down Diophantine Equation",1613826000,309,0
+749,"Near Power Sums",1614441600,708,0
+750,"Optimal Card Stacking",1615057200,324,0
+751,"Concatenation Coincidence",1615672800,2282,0
+752,"Powers of $1+\sqrt 7$",1616288400,651,0
+753,"Fermat Equation",1616904000,398,0
+754,"Product of Gauss Factorials",1617519600,707,0
+755,"Not Zeckendorf",1618740000,862,0
+756,"Approximating a Sum",1619874000,333,0
+757,"Stealthy Numbers",1621094400,1193,0
+758,"Buckets of Water",1622314800,225,0
+759,"A Squared Recurrence Relation",1623535200,543,0
+760,"Sum over Bitwise Operators",1624755600,423,0
+761,"Runner and Swimmer",1625976000,157,0
+762,"Amoebas in a 2D Grid",1630760400,208,0
+763,"Amoebas in a 3D Grid",1630760400,127,0
+764,"Asymmetric Diophantine Equation",1631376000,362,0
+765,"Trillionaire",1631991600,220,0
+766,"Sliding Block Puzzle",1633212000,323,0
+767,"Window into a Matrix II",1633827600,174,0
+768,"Chandelier",1634443200,172,0
+769,"Binary Quadratic Form II",1635055200,142,0
+770,"Delphi Flip",1635674400,502,0
+771,"Pseudo Geometric Sequences",1636203600,132,0
+772,"Balanceable $k$-bounded Partitions",1636819200,494,0
+773,"Ruff Numbers",1637434800,201,0
+774,"Conjunctive Sequences",1638050400,137,0
+775,"Saving Paper",1638666000,244,0
+776,"Digit Sum Division",1639281600,539,0
+777,"Lissajous Curves",1639897200,125,0
+778,"Freshman's Product",1640512800,400,0
+779,"Prime Factor and Exponent",1641042000,476,0
+780,"Toriangulations",1641657600,113,0
+781,"Feynman Diagrams",1642273200,124,0
+782,"Distinct Rows and Columns",1642888800,153,0
+783,"Urns",1643504400,200,0
+784,"Reciprocal Pairs",1644120000,391,0
+785,"Symmetric Diophantine Equation",1644735600,195,0
+786,"Billiard",1645351200,120,0
+787,"Bézout's Game",1645880400,199,0
+788,"Dominating Numbers",1646496000,1123,0
+789,"Minimal Pairing Modulo $p$",1647111600,191,0
+790,"Clock Grid",1647727200,259,0
+791,"Average and Variance",1648342800,161,0
+792,"Too Many Twos",1648958400,138,0
+793,"Median of Products",1649574000,642,0
+794,"Seventeen Points",1650189600,314,0
+795,"Alternating GCD Sum",1650718800,349,0
+796,"A Grand Shuffle",1651334400,200,0
+797,"Cyclogenic Polynomials",1651950000,192,0
+798,"Card Stacking Game",1652565600,122,0
+799,"Pentagonal Puzzle",1653181200,231,0
+800,"Hybrid Integers",1653796800,1806,0
+801,"$x^y \equiv y^x$",1654412400,269,0
+802,"Iterated Composition",1655028000,254,0
+803,"Pseudorandom Sequence",1655557200,222,0
+804,"Counting Binary Quadratic Representations",1656172800,639,0
+805,"Shifted Multiples",1656788400,190,0
+806,"Nim on Towers of Hanoi",1657404000,124,0
+807,"Loops of Ropes",1662858000,130,0
+808,"Reversible Prime Squares",1663473600,2375,0
+809,"Rational Recurrence Relation ",1664089200,297,0
+810,"XOR-Primes",1664704800,689,0
+811,"Bitwise Recursion",1665234000,223,0
+812,"Dynamical Polynomials",1665849600,128,0
+813,"XOR-Powers",1666465200,535,0
+814,"Mezzo-forte",1667080800,211,0
+815,"Group by Value",1667696400,408,0
+816,"Shortest Distance Among Points",1668312000,1886,0
+817,"Digits in Squares",1668927600,441,0
+818,"SET",1669543200,132,0
+819,"Iterative Sampling",1670072400,220,0
+820,"$N$<sup>th</sup> Digit of Reciprocals",1670688000,872,0
+821,"123-Separable",1671303600,145,0
+822,"Square the Smallest",1671919200,729,0
+823,"Factor Shuffle",1672534800,191,0
+824,"Chess Sliders",1673150400,115,0
+825,"Chasing Game",1673766000,150,0
+826,"Birds on a Wire",1674381600,233,0
+827,"Pythagorean Triple Occurrence",1674910800,182,0
+828,"Numbers Challenge",1675526400,597,0
+829,"Integral Fusion",1676142000,204,0
+830,"Binomials and Powers",1676757600,143,0
+831,"Triple Product",1677373200,184,0
+832,"Mex Sequence",1677988800,300,0
+833,"Square Triangle Products",1678604400,164,0
+834,"Add and Divide",1679220000,373,0
+835,"Supernatural Triangles",1679749200,353,0
+836,"A Bold Proposition",1680364800,2940,0
+837,"Amidakuji",1680364800,202,0
+838,"Not Coprime",1680980400,553,0
+839,"Beans in Bowls",1681596000,341,0
+840,"Sum of Products",1682211600,354,0
+841,"Regular Star Polygons",1682827200,183,0
+842,"Irregular Star Polygons",1683442800,124,0
+843,"Periodic Circles",1684058400,123,0
+844,"$k$-Markov Numbers",1684587600,203,0
+845,"Prime Digit Sum",1685203200,655,0
+846,"Magic Bracelets",1685818800,200,0
+847,"Jack's Bean",1686434400,113,0
+848,"Guessing with Sets",1687050000,189,0
+849,"The Tournament",1687665600,244,0
+850,"Fractions of Powers",1688281200,118,0
+851,"SOP and POS",1688896800,134,0
+852,"Coins in a Box",1693659600,210,0
+853,"Pisano Periods 1",1694275200,978,0
+854,"Pisano Periods 2",1694275200,310,0
+855,"Delphi Paper",1694890800,140,0
+856,"Waiting for a Pair",1695506400,497,0
+857,"Beautiful Graphs",1696122000,147,0
+858,"LCM",1696737600,199,0
+859,"Cookie Game",1697353200,197,0
+860,"Gold and Silver Coin Game",1697968800,357,0
+861,"Products of Bi-Unitary Divisors",1698498000,184,0
+862,"Larger Digit Permutation",1699113600,541,0
+863,"Different Dice",1699729200,197,0
+864,"Square + 1 = Squarefree",1700344800,142,0
+865,"Triplicate Numbers",1700960400,247,0
+866,"Tidying Up B",1701576000,333,0
+867,"Tiling Dodecagon",1702191600,157,0
+868,"Belfry Maths",1702807200,347,0
+869,"Prime Guessing",1703336400,537,0
+870,"Stone Game IV",1703952000,129,0
+871,"Drifting Subsets",1704567600,282,0
+872,"Recursive Tree",1705183200,487,0
+873,"Words with Gaps",1705798800,240,0
+874,"Maximal Prime Score",1706414400,359,0
+875,"Quadruple Congruence",1707030000,169,0
+876,"Triplet Tricks",1707645600,75,0
+877,"XOR-Equation A",1708174800,274,0
+878,"XOR-Equation B",1708174800,191,0
+879,"Touch-screen Password",1708790400,298,0
+880,"Nested Radicals",1709406000,92,0
+881,"Divisor Graph Width",1710021600,317,0
+882,"Removing Bits",1710637200,90,0
+883,"Remarkable Triangles",1711252800,66,0
+884,"Removing Cubes",1711868400,334,0
+885,"Sorted Digits",1712484000,314,0
+886,"Coprime Permutations",1713013200,126,0
diff --git a/euler/stats.html b/euler/stats.html
new file mode 100644
index 0000000..0c68fc7
--- /dev/null
+++ b/euler/stats.html
@@ -0,0 +1,1003 @@
+<!DOCTYPE html>
+
+<html lang="en">
+ <head>
+ <title>Project Euler Stats</title>
+ <meta charset="utf-8"/>
+ <meta content="width=device-width, initial-scale=1, shrink-to-fit=no" name="viewport"/>
+ <link href="../style.css" rel="stylesheet" type="text/css"/>
+ <link href="euler.css" rel="stylesheet" type="text/css"/>
+ </head>
+ <body>
+ <div class="container" id="dhead">
+ <h1>Project Euler Stats</h1>
+ <br>
+ <img src="https://projecteuler.net/profile/conjfrnk.png" width=200 height=60 alt="Project Euler Stats" loading="lazy" />
+ </div>
+ <div class="darkgroup">
+ <div class="container">
+ <div class="ctitle">Progress</div>
+ <table class="progress">
+ <tr>
+ <td class="completed"><a href="https://projecteuler.net/problem=1" title="Multiples of 3 or 5">1</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=2" title="Even Fibonacci Numbers">2</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=3" title="Largest Prime Factor">3</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=4" title="Largest Palindrome Product">4</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=5" title="Smallest Multiple">5</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=6" title="Sum Square Difference">6</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=7" title="10001st Prime">7</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=8" title="Largest Product in a Series">8</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=9" title="Special Pythagorean Triplet">9</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=10" title="Summation of Primes">10</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=11" title="Largest Product in a Grid">11</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=12" title="Highly Divisible Triangular Number">12</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=13" title="Large Sum">13</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=14" title="Longest Collatz Sequence">14</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=15" title="Lattice Paths">15</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=16" title="Power Digit Sum">16</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=17" title="Number Letter Counts">17</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=18" title="Maximum Path Sum I">18</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=19" title="Counting Sundays">19</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=20" title="Factorial Digit Sum">20</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=21" title="Amicable Numbers">21</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=22" title="Names Scores">22</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=23" title="Non-Abundant Sums">23</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=24" title="Lexicographic Permutations">24</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=25" title="$1000$-digit Fibonacci Number">25</a></td>
+ </tr>
+ <tr>
+ <td class="completed"><a href="https://projecteuler.net/problem=26" title="Reciprocal Cycles">26</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=27" title="Quadratic Primes">27</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=28" title="Number Spiral Diagonals">28</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=29" title="Distinct Powers">29</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=30" title="Digit Fifth Powers">30</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=31" title="Coin Sums">31</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=32" title="Pandigital Products">32</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=33" title="Digit Cancelling Fractions">33</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=34" title="Digit Factorials">34</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=35" title="Circular Primes">35</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=36" title="Double-base Palindromes">36</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=37" title="Truncatable Primes">37</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=38" title="Pandigital Multiples">38</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=39" title="Integer Right Triangles">39</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=40" title="Champernowne's Constant">40</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=41" title="Pandigital Prime">41</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=42" title="Coded Triangle Numbers">42</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=43" title="Sub-string Divisibility">43</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=44" title="Pentagon Numbers">44</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=45" title="Triangular, Pentagonal, and Hexagonal">45</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=46" title="Goldbach's Other Conjecture">46</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=47" title="Distinct Primes Factors">47</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=48" title="Self Powers">48</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=49" title="Prime Permutations">49</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=50" title="Consecutive Prime Sum">50</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=51" title="Prime Digit Replacements">51</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=52" title="Permuted Multiples">52</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=53" title="Combinatoric Selections">53</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=54" title="Poker Hands">54</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=55" title="Lychrel Numbers">55</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=56" title="Powerful Digit Sum">56</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=57" title="Square Root Convergents">57</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=58" title="Spiral Primes">58</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=59" title="XOR Decryption">59</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=60" title="Prime Pair Sets">60</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=61" title="Cyclical Figurate Numbers">61</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=62" title="Cubic Permutations">62</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=63" title="Powerful Digit Counts">63</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=64" title="Odd Period Square Roots">64</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=65" title="Convergents of $e$">65</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=66" title="Diophantine Equation">66</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=67" title="Maximum Path Sum II">67</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=68" title="Magic 5-gon Ring">68</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=69" title="Totient Maximum">69</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=70" title="Totient Permutation">70</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=71" title="Ordered Fractions">71</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=72" title="Counting Fractions">72</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=73" title="Counting Fractions in a Range">73</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=74" title="Digit Factorial Chains">74</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=75" title="Singular Integer Right Triangles">75</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=76" title="Counting Summations">76</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=77" title="Prime Summations">77</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=78" title="Coin Partitions">78</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=79" title="Passcode Derivation">79</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=80" title="Square Root Digital Expansion">80</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=81" title="Path Sum: Two Ways">81</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=82" title="Path Sum: Three Ways">82</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=83" title="Path Sum: Four Ways">83</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=84" title="Monopoly Odds">84</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=85" title="Counting Rectangles">85</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=86" title="Cuboid Route">86</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=87" title="Prime Power Triples">87</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=88" title="Product-sum Numbers">88</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=89" title="Roman Numerals">89</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=90" title="Cube Digit Pairs">90</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=91" title="Right Triangles with Integer Coordinates">91</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=92" title="Square Digit Chains">92</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=93" title="Arithmetic Expressions">93</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=94" title="Almost Equilateral Triangles">94</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=95" title="Amicable Chains">95</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=96" title="Su Doku">96</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=97" title="Large Non-Mersenne Prime">97</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=98" title="Anagramic Squares">98</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=99" title="Largest Exponential">99</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=100" title="Arranged Probability">100</a></td>
+ </tr>
+ </table>
+ <table class="progress">
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=101" title="Optimum Polynomial">101</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=102" title="Triangle Containment">102</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=103" title="Special Subset Sums: Optimum">103</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=104" title="Pandigital Fibonacci Ends">104</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=105" title="Special Subset Sums: Testing">105</a></td>
+ <td class="completed"><a href="https://projecteuler.net/problem=106" title="Special Subset Sums: Meta-testing">106</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=107" title="Minimal Network">107</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=108" title="Diophantine Reciprocals I">108</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=109" title="Darts">109</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=110" title="Diophantine Reciprocals II">110</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=111" title="Primes with Runs">111</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=112" title="Bouncy Numbers">112</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=113" title="Non-bouncy Numbers">113</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=114" title="Counting Block Combinations I">114</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=115" title="Counting Block Combinations II">115</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=116" title="Red, Green or Blue Tiles">116</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=117" title="Red, Green, and Blue Tiles">117</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=118" title="Pandigital Prime Sets">118</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=119" title="Digit Power Sum">119</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=120" title="Square Remainders">120</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=121" title="Disc Game Prize Fund">121</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=122" title="Efficient Exponentiation">122</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=123" title="Prime Square Remainders">123</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=124" title="Ordered Radicals">124</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=125" title="Palindromic Sums">125</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=126" title="Cuboid Layers">126</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=127" title="abc-hits">127</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=128" title="Hexagonal Tile Differences">128</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=129" title="Repunit Divisibility">129</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=130" title="Composites with Prime Repunit Property">130</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=131" title="Prime Cube Partnership">131</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=132" title="Large Repunit Factors">132</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=133" title="Repunit Nonfactors">133</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=134" title="Prime Pair Connection">134</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=135" title="Same Differences">135</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=136" title="Singleton Difference">136</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=137" title="Fibonacci Golden Nuggets">137</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=138" title="Special Isosceles Triangles">138</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=139" title="Pythagorean Tiles">139</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=140" title="Modified Fibonacci Golden Nuggets">140</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=141" title="Square Progressive Numbers">141</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=142" title="Perfect Square Collection">142</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=143" title="Torricelli Triangles">143</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=144" title="Laser Beam Reflections ">144</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=145" title="Reversible Numbers">145</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=146" title="Investigating a Prime Pattern ">146</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=147" title="Rectangles in Cross-hatched Grids">147</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=148" title="Exploring Pascal's Triangle">148</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=149" title="Maximum-sum Subsequence">149</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=150" title="Sub-triangle Sums">150</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=151" title="A Preference for A5">151</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=152" title="Sums of Square Reciprocals">152</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=153" title="Investigating Gaussian Integers">153</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=154" title="Exploring Pascal's Pyramid">154</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=155" title="Counting Capacitor Circuits">155</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=156" title="Counting Digits">156</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=157" title="Base-10 Diophantine Reciprocal">157</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=158" title="Lexicographical Neighbours">158</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=159" title="Digital Root Sums of Factorisations">159</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=160" title="Factorial Trailing Digits">160</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=161" title="Triominoes">161</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=162" title="Hexadecimal Numbers">162</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=163" title="Cross-hatched Triangles">163</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=164" title="Three Consecutive Digital Sum Limit">164</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=165" title="Intersections">165</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=166" title="Criss Cross">166</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=167" title="Investigating Ulam Sequences">167</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=168" title="Number Rotations">168</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=169" title="Sums of Powers of Two">169</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=170" title="Pandigital Concatenating Products">170</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=171" title="Square Sum of the Digital Squares">171</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=172" title="Few Repeated Digits">172</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=173" title="Hollow Square Laminae I">173</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=174" title="Hollow Square Laminae II">174</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=175" title="Fractions and Sum of Powers of Two">175</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=176" title="Common Cathetus Right-angled Triangles">176</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=177" title="Integer Angled Quadrilaterals">177</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=178" title="Step Numbers">178</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=179" title="Consecutive Positive Divisors">179</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=180" title="Golden Triplets">180</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=181" title="Grouping Two Different Coloured Objects">181</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=182" title="RSA Encryption">182</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=183" title="Maximum Product of Parts">183</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=184" title="Triangles Containing the Origin">184</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=185" title="Number Mind">185</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=186" title="Connectedness of a Network">186</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=187" title="Semiprimes">187</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=188" title="Hyperexponentiation">188</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=189" title="Tri-colouring a Triangular Grid">189</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=190" title="Maximising a Weighted Product">190</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=191" title="Prize Strings">191</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=192" title="Best Approximations">192</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=193" title="Squarefree Numbers">193</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=194" title="Coloured Configurations">194</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=195" title="$60$-degree Triangle Inscribed Circles">195</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=196" title="Prime Triplets">196</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=197" title="A Recursively Defined Sequence">197</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=198" title="Ambiguous Numbers">198</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=199" title="Iterative Circle Packing">199</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=200" title="Prime-proof Squbes">200</a></td>
+ </tr>
+ </table>
+ <table class="progress">
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=201" title="Subsets with a Unique Sum">201</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=202" title="Laserbeam">202</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=203" title="Squarefree Binomial Coefficients">203</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=204" title="Generalised Hamming Numbers">204</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=205" title="Dice Game">205</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=206" title="Concealed Square">206</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=207" title="Integer Partition Equations">207</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=208" title="Robot Walks">208</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=209" title="Circular Logic">209</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=210" title="Obtuse Angled Triangles">210</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=211" title="Divisor Square Sum">211</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=212" title="Combined Volume of Cuboids">212</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=213" title="Flea Circus">213</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=214" title="Totient Chains">214</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=215" title="Crack-free Walls">215</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=216" title="The Primality of $2n^2 - 1$">216</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=217" title="Balanced Numbers">217</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=218" title="Perfect Right-angled Triangles">218</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=219" title="Skew-cost Coding">219</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=220" title="Heighway Dragon">220</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=221" title="Alexandrian Integers">221</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=222" title="Sphere Packing">222</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=223" title="Almost Right-angled Triangles I">223</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=224" title="Almost Right-angled Triangles II">224</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=225" title="Tribonacci Non-divisors">225</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=226" title="A Scoop of Blancmange">226</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=227" title="The Chase">227</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=228" title="Minkowski Sums">228</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=229" title="Four Representations Using Squares">229</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=230" title="Fibonacci Words">230</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=231" title="Prime Factorisation of Binomial Coefficients">231</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=232" title="The Race">232</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=233" title="Lattice Points on a Circle">233</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=234" title="Semidivisible Numbers">234</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=235" title="An Arithmetic Geometric Sequence">235</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=236" title="Luxury Hampers">236</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=237" title="Tours on a $4 \times N$ Playing Board">237</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=238" title="Infinite String Tour">238</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=239" title="Twenty-two Foolish Primes">239</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=240" title="Top Dice">240</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=241" title="Perfection Quotients">241</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=242" title="Odd Triplets">242</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=243" title="Resilience">243</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=244" title="Sliders">244</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=245" title="Coresilience">245</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=246" title="Tangents to an Ellipse">246</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=247" title="Squares Under a Hyperbola">247</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=248" title="Euler's Totient Function Equals 13!">248</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=249" title="Prime Subset Sums">249</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=250" title="$250250$">250</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=251" title="Cardano Triplets">251</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=252" title="Convex Holes">252</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=253" title="Tidying Up A">253</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=254" title="Sums of Digit Factorials">254</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=255" title="Rounded Square Roots">255</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=256" title="Tatami-Free Rooms">256</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=257" title="Angular Bisectors">257</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=258" title="A Lagged Fibonacci Sequence">258</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=259" title="Reachable Numbers">259</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=260" title="Stone Game">260</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=261" title="Pivotal Square Sums">261</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=262" title="Mountain Range">262</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=263" title="An Engineers' Dream Come True">263</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=264" title="Triangle Centres">264</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=265" title="Binary Circles">265</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=266" title="Pseudo Square Root">266</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=267" title="Billionaire">267</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=268" title="At Least Four Distinct Prime Factors Less Than 100">268</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=269" title="Polynomials with at Least One Integer Root">269</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=270" title="Cutting Squares">270</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=271" title="Modular Cubes, Part 1">271</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=272" title="Modular Cubes, Part 2">272</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=273" title="Sum of Squares">273</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=274" title="Divisibility Multipliers">274</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=275" title="Balanced Sculptures">275</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=276" title="Primitive Triangles">276</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=277" title="A Modified Collatz Sequence">277</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=278" title="Linear Combinations of Semiprimes">278</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=279" title="Triangles with Integral Sides and an Integral Angle ">279</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=280" title="Ant and Seeds">280</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=281" title="Pizza Toppings">281</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=282" title="The Ackermann Function">282</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=283" title="Integer Sided Triangles with Integral Area/perimeter Ratio">283</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=284" title="Steady Squares">284</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=285" title="Pythagorean Odds">285</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=286" title="Scoring Probabilities">286</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=287" title="Quadtree Encoding (a Simple Compression Algorithm)">287</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=288" title="An Enormous Factorial">288</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=289" title="Eulerian Cycles">289</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=290" title="Digital Signature">290</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=291" title="Panaitopol Primes">291</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=292" title="Pythagorean Polygons">292</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=293" title="Pseudo-Fortunate Numbers">293</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=294" title="Sum of Digits - Experience #23">294</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=295" title="Lenticular Holes">295</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=296" title="Angular Bisector and Tangent">296</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=297" title="Zeckendorf Representation">297</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=298" title="Selective Amnesia">298</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=299" title="Three Similar Triangles">299</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=300" title="Protein Folding">300</a></td>
+ </tr>
+ </table>
+ <table class="progress">
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=301" title="Nim">301</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=302" title="Strong Achilles Numbers">302</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=303" title="Multiples with Small Digits">303</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=304" title="Primonacci">304</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=305" title="Reflexive Position">305</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=306" title="Paper-strip Game">306</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=307" title="Chip Defects">307</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=308" title="An Amazing Prime-generating Automaton">308</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=309" title="Integer Ladders">309</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=310" title="Nim Square">310</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=311" title="Biclinic Integral Quadrilaterals">311</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=312" title="Cyclic Paths on Sierpiński Graphs">312</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=313" title="Sliding Game">313</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=314" title="The Mouse on the Moon">314</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=315" title="Digital Root Clocks">315</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=316" title="Numbers in Decimal Expansions">316</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=317" title="Firecracker">317</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=318" title="2011 Nines">318</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=319" title="Bounded Sequences">319</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=320" title="Factorials Divisible by a Huge Integer">320</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=321" title="Swapping Counters">321</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=322" title="Binomial Coefficients Divisible by 10">322</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=323" title="Bitwise-OR Operations on Random Integers">323</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=324" title="Building a Tower">324</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=325" title="Stone Game II">325</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=326" title="Modulo Summations">326</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=327" title="Rooms of Doom">327</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=328" title="Lowest-cost Search">328</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=329" title="Prime Frog">329</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=330" title="Euler's Number">330</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=331" title="Cross Flips">331</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=332" title="Spherical Triangles">332</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=333" title="Special Partitions">333</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=334" title="Spilling the Beans">334</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=335" title="Gathering the Beans">335</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=336" title="Maximix Arrangements">336</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=337" title="Totient Stairstep Sequences">337</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=338" title="Cutting Rectangular Grid Paper">338</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=339" title="Peredur Fab Efrawg">339</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=340" title="Crazy Function">340</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=341" title="Golomb's Self-describing Sequence">341</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=342" title="The Totient of a Square Is a Cube">342</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=343" title="Fractional Sequences">343</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=344" title="Silver Dollar Game">344</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=345" title="Matrix Sum">345</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=346" title="Strong Repunits">346</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=347" title="Largest Integer Divisible by Two Primes">347</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=348" title="Sum of a Square and a Cube">348</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=349" title="Langton's Ant">349</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=350" title="Constraining the Least Greatest and the Greatest Least">350</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=351" title="Hexagonal Orchards">351</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=352" title="Blood Tests">352</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=353" title="Risky Moon">353</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=354" title="Distances in a Bee's Honeycomb ">354</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=355" title="Maximal Coprime Subset">355</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=356" title="Largest Roots of Cubic Polynomials">356</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=357" title="Prime Generating Integers">357</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=358" title="Cyclic Numbers">358</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=359" title="Hilbert's New Hotel">359</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=360" title="Scary Sphere">360</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=361" title="Subsequence of Thue-Morse Sequence">361</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=362" title="Squarefree Factors">362</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=363" title="Bézier Curves">363</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=364" title="Comfortable Distance">364</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=365" title="A Huge Binomial Coefficient">365</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=366" title="Stone Game III">366</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=367" title="Bozo Sort">367</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=368" title="A Kempner-like Series">368</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=369" title="Badugi">369</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=370" title="Geometric Triangles">370</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=371" title="Licence Plates">371</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=372" title="Pencils of Rays">372</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=373" title="Circumscribed Circles">373</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=374" title="Maximum Integer Partition Product">374</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=375" title="Minimum of Subsequences">375</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=376" title="Nontransitive Sets of Dice">376</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=377" title="Sum of Digits - Experience #13">377</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=378" title="Triangle Triples">378</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=379" title="Least Common Multiple Count">379</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=380" title="Amazing Mazes!">380</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=381" title="$(\text{prime}-k)$ Factorial">381</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=382" title="Generating Polygons">382</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=383" title="Divisibility Comparison Between Factorials">383</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=384" title="Rudin-Shapiro Sequence">384</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=385" title="Ellipses Inside Triangles">385</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=386" title="Maximum Length of an Antichain">386</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=387" title="Harshad Numbers">387</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=388" title="Distinct Lines">388</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=389" title="Platonic Dice">389</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=390" title="Triangles with Non Rational Sides and Integral Area">390</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=391" title="Hopping Game">391</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=392" title="Enmeshed Unit Circle">392</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=393" title="Migrating Ants">393</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=394" title="Eating Pie">394</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=395" title="Pythagorean Tree">395</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=396" title="Weak Goodstein Sequence">396</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=397" title="Triangle on Parabola">397</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=398" title="Cutting Rope">398</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=399" title="Squarefree Fibonacci Numbers">399</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=400" title="Fibonacci Tree Game">400</a></td>
+ </tr>
+ </table>
+ <table class="progress">
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=401" title="Sum of Squares of Divisors">401</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=402" title="Integer-valued Polynomials">402</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=403" title="Lattice Points Enclosed by Parabola and Line">403</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=404" title="Crisscross Ellipses">404</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=405" title="A Rectangular Tiling">405</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=406" title="Guessing Game">406</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=407" title="Idempotents">407</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=408" title="Admissible Paths Through a Grid">408</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=409" title="Nim Extreme">409</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=410" title="Circle and Tangent Line">410</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=411" title="Uphill Paths">411</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=412" title="Gnomon Numbering">412</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=413" title="One-child Numbers">413</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=414" title="Kaprekar Constant">414</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=415" title="Titanic Sets">415</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=416" title="A Frog's Trip">416</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=417" title="Reciprocal Cycles II">417</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=418" title="Factorisation Triples">418</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=419" title="Look and Say Sequence">419</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=420" title="$2 \times 2$ Positive Integer Matrix">420</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=421" title="Prime Factors of $n^{15}+1$">421</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=422" title="Sequence of Points on a Hyperbola">422</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=423" title="Consecutive Die Throws">423</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=424" title="Kakuro">424</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=425" title="Prime Connection">425</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=426" title="Box-Ball System">426</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=427" title="$n$-sequences">427</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=428" title="Necklace of Circles">428</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=429" title="Sum of Squares of Unitary Divisors">429</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=430" title="Range Flips">430</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=431" title="Square Space Silo">431</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=432" title="Totient Sum">432</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=433" title="Steps in Euclid's Algorithm">433</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=434" title="Rigid Graphs">434</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=435" title="Polynomials of Fibonacci Numbers">435</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=436" title="Unfair Wager">436</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=437" title="Fibonacci Primitive Roots">437</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=438" title="Integer Part of Polynomial Equation's Solutions">438</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=439" title="Sum of Sum of Divisors">439</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=440" title="GCD and Tiling">440</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=441" title="The Inverse Summation of Coprime Couples">441</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=442" title="Eleven-free Integers">442</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=443" title="GCD Sequence">443</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=444" title="The Roundtable Lottery">444</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=445" title="Retractions A">445</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=446" title="Retractions B">446</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=447" title="Retractions C">447</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=448" title="Average Least Common Multiple">448</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=449" title="Chocolate Covered Candy">449</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=450" title="Hypocycloid and Lattice Points">450</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=451" title="Modular Inverses">451</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=452" title="Long Products">452</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=453" title="Lattice Quadrilaterals">453</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=454" title="Diophantine Reciprocals III">454</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=455" title="Powers with Trailing Digits">455</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=456" title="Triangles Containing the Origin II">456</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=457" title="A Polynomial Modulo the Square of a Prime">457</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=458" title="Permutations of Project">458</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=459" title="Flipping Game">459</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=460" title="An Ant on the Move">460</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=461" title="Almost Pi">461</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=462" title="Permutation of 3-smooth Numbers">462</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=463" title="A Weird Recurrence Relation">463</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=464" title="Möbius Function and Intervals">464</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=465" title="Polar Polygons">465</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=466" title="Distinct Terms in a Multiplication Table">466</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=467" title="Superinteger">467</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=468" title="Smooth Divisors of Binomial Coefficients">468</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=469" title="Empty Chairs">469</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=470" title="Super Ramvok">470</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=471" title="Triangle Inscribed in Ellipse">471</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=472" title="Comfortable Distance II">472</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=473" title="Phigital Number Base">473</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=474" title="Last Digits of Divisors">474</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=475" title="Music Festival">475</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=476" title="Circle Packing II">476</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=477" title="Number Sequence Game">477</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=478" title="Mixtures">478</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=479" title="Roots on the Rise">479</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=480" title="The Last Question">480</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=481" title="Chef Showdown">481</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=482" title="The Incenter of a Triangle">482</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=483" title="Repeated Permutation">483</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=484" title="Arithmetic Derivative">484</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=485" title="Maximum Number of Divisors">485</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=486" title="Palindrome-containing Strings">486</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=487" title="Sums of Power Sums">487</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=488" title="Unbalanced Nim">488</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=489" title="Common Factors Between Two Sequences">489</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=490" title="Jumping Frog">490</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=491" title="Double Pandigital Number Divisible by $11$">491</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=492" title="Exploding Sequence">492</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=493" title="Under the Rainbow">493</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=494" title="Collatz Prefix Families">494</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=495" title="Writing $n$ as the Product of $k$ Distinct Positive Integers">495</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=496" title="Incenter and Circumcenter of Triangle">496</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=497" title="Drunken Tower of Hanoi">497</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=498" title="Remainder of Polynomial Division">498</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=499" title="St. Petersburg Lottery">499</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=500" title="Problem 500!!!">500</a></td>
+ </tr>
+ </table>
+ <table class="progress">
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=501" title="Eight Divisors">501</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=502" title="Counting Castles">502</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=503" title="Compromise or Persist">503</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=504" title="Square on the Inside">504</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=505" title="Bidirectional Recurrence">505</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=506" title="Clock Sequence">506</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=507" title="Shortest Lattice Vector">507</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=508" title="Integers in Base $i-1$">508</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=509" title="Divisor Nim">509</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=510" title="Tangent Circles">510</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=511" title="Sequences with Nice Divisibility Properties">511</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=512" title="Sums of Totients of Powers">512</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=513" title="Integral Median">513</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=514" title="Geoboard Shapes">514</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=515" title="Dissonant Numbers">515</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=516" title="$5$-smooth Totients">516</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=517" title="A Real Recursion">517</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=518" title="Prime Triples and Geometric Sequences">518</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=519" title="Tricoloured Coin Fountains">519</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=520" title="Simbers">520</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=521" title="Smallest Prime Factor">521</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=522" title="Hilbert's Blackout">522</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=523" title="First Sort I">523</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=524" title="First Sort II">524</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=525" title="Rolling Ellipse">525</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=526" title="Largest Prime Factors of Consecutive Numbers">526</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=527" title="Randomized Binary Search">527</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=528" title="Constrained Sums">528</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=529" title="$10$-substrings">529</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=530" title="GCD of Divisors">530</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=531" title="Chinese Leftovers">531</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=532" title="Nanobots on Geodesics">532</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=533" title="Minimum Values of the Carmichael Function">533</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=534" title="Weak Queens">534</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=535" title="Fractal Sequence">535</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=536" title="Modulo Power Identity ">536</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=537" title="Counting Tuples">537</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=538" title="Maximum Quadrilaterals">538</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=539" title="Odd Elimination">539</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=540" title="Counting Primitive Pythagorean Triples">540</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=541" title="Divisibility of Harmonic Number Denominators">541</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=542" title="Geometric Progression with Maximum Sum">542</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=543" title="Prime-Sum Numbers">543</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=544" title="Chromatic Conundrum">544</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=545" title="Faulhaber's Formulas">545</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=546" title="The Floor's Revenge">546</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=547" title="Distance of Random Points Within Hollow Square Laminae">547</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=548" title="Gozinta Chains">548</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=549" title="Divisibility of Factorials">549</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=550" title="Divisor Game">550</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=551" title="Sum of Digits Sequence">551</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=552" title="Chinese Leftovers II">552</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=553" title="Power Sets of Power Sets">553</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=554" title="Centaurs on a Chess Board">554</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=555" title="McCarthy 91 Function">555</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=556" title="Squarefree Gaussian Integers">556</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=557" title="Cutting Triangles">557</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=558" title="Irrational Base">558</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=559" title="Permuted Matrices">559</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=560" title="Coprime Nim">560</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=561" title="Divisor Pairs">561</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=562" title="Maximal Perimeter">562</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=563" title="Robot Welders">563</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=564" title="Maximal Polygons">564</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=565" title="Divisibility of Sum of Divisors">565</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=566" title="Cake Icing Puzzle">566</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=567" title="Reciprocal Games I">567</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=568" title="Reciprocal Games II">568</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=569" title="Prime Mountain Range">569</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=570" title="Snowflakes">570</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=571" title="Super Pandigital Numbers">571</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=572" title="Idempotent Matrices">572</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=573" title="Unfair Race">573</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=574" title="Verifying Primes">574</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=575" title="Wandering Robots">575</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=576" title="Irrational Jumps">576</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=577" title="Counting Hexagons">577</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=578" title="Integers with Decreasing Prime Powers">578</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=579" title="Lattice Points in Lattice Cubes">579</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=580" title="Squarefree Hilbert Numbers">580</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=581" title="$47$-smooth Triangular Numbers">581</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=582" title="Nearly Isosceles $120$ Degree Triangles">582</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=583" title="Heron Envelopes">583</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=584" title="Birthday Problem Revisited">584</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=585" title="Nested Square Roots">585</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=586" title="Binary Quadratic Form">586</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=587" title="Concave Triangle">587</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=588" title="Quintinomial Coefficients">588</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=589" title="Poohsticks Marathon">589</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=590" title="Sets with a Given Least Common Multiple">590</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=591" title="Best Approximations by Quadratic Integers">591</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=592" title="Factorial Trailing Digits 2">592</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=593" title="Fleeting Medians">593</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=594" title="Rhombus Tilings">594</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=595" title="Incremental Random Sort">595</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=596" title="Number of Lattice Points in a Hyperball">596</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=597" title="Torpids">597</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=598" title="Split Divisibilities">598</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=599" title="Distinct Colourings of a Rubik's Cube">599</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=600" title="Integer Sided Equiangular Hexagons">600</a></td>
+ </tr>
+ </table>
+ <table class="progress">
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=601" title="Divisibility Streaks">601</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=602" title="Product of Head Counts">602</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=603" title="Substring Sums of Prime Concatenations">603</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=604" title="Convex Path in Square">604</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=605" title="Pairwise Coin-Tossing Game">605</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=606" title="Gozinta Chains II">606</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=607" title="Marsh Crossing">607</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=608" title="Divisor Sums">608</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=609" title="$\pi$ Sequences">609</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=610" title="Roman Numerals II">610</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=611" title="Hallway of Square Steps">611</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=612" title="Friend Numbers">612</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=613" title="Pythagorean Ant">613</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=614" title="Special Partitions 2">614</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=615" title="The Millionth Number with at Least One Million Prime Factors">615</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=616" title="Creative Numbers">616</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=617" title="Mirror Power Sequence">617</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=618" title="Numbers with a Given Prime Factor Sum">618</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=619" title="Square Subsets">619</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=620" title="Planetary Gears">620</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=621" title="Expressing an Integer as the Sum of Triangular Numbers">621</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=622" title="Riffle Shuffles">622</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=623" title="Lambda Count">623</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=624" title="Two Heads Are Better Than One">624</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=625" title="Gcd Sum">625</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=626" title="Counting Binary Matrices">626</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=627" title="Counting Products">627</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=628" title="Open Chess Positions">628</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=629" title="Scatterstone Nim">629</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=630" title="Crossed Lines">630</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=631" title="Constrained Permutations">631</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=632" title="Square Prime Factors">632</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=633" title="Square Prime Factors II">633</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=634" title="Numbers of the Form $a^2b^3$">634</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=635" title="Subset Sums">635</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=636" title="Restricted Factorisations">636</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=637" title="Flexible Digit Sum">637</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=638" title="Weighted Lattice Paths">638</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=639" title="Summing a Multiplicative Function">639</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=640" title="Shut the Box">640</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=641" title="A Long Row of Dice">641</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=642" title="Sum of Largest Prime Factors">642</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=643" title="$2$-Friendly">643</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=644" title="Squares on the Line">644</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=645" title="Every Day Is a Holiday">645</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=646" title="Bounded Divisors">646</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=647" title="Linear Transformations of Polygonal Numbers">647</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=648" title="Skipping Squares">648</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=649" title="Low-Prime Chessboard Nim">649</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=650" title="Divisors of Binomial Product">650</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=651" title="Patterned Cylinders">651</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=652" title="Distinct Values of a Proto-logarithmic Function">652</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=653" title="Frictionless Tube">653</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=654" title="Neighbourly Constraints">654</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=655" title="Divisible Palindromes">655</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=656" title="Palindromic Sequences">656</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=657" title="Incomplete Words">657</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=658" title="Incomplete Words II">658</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=659" title="Largest Prime">659</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=660" title="Pandigital Triangles">660</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=661" title="A Long Chess Match">661</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=662" title="Fibonacci Paths">662</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=663" title="Sums of Subarrays">663</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=664" title="An Infinite Game">664</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=665" title="Proportionate Nim">665</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=666" title="Polymorphic Bacteria">666</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=667" title="Moving Pentagon">667</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=668" title="Square Root Smooth Numbers">668</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=669" title="The King's Banquet">669</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=670" title="Colouring a Strip">670</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=671" title="Colouring a Loop">671</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=672" title="One More One">672</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=673" title="Beds and Desks">673</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=674" title="Solving $\mathcal{I}$-equations">674</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=675" title="$2^{\omega(n)}$">675</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=676" title="Matching Digit Sums">676</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=677" title="Coloured Graphs">677</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=678" title="Fermat-like Equations">678</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=679" title="Freefarea">679</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=680" title="Yarra Gnisrever">680</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=681" title="Maximal Area">681</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=682" title="$5$-Smooth Pairs">682</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=683" title="The Chase II">683</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=684" title="Inverse Digit Sum">684</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=685" title="Inverse Digit Sum II">685</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=686" title="Powers of Two">686</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=687" title="Shuffling Cards">687</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=688" title="Piles of Plates">688</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=689" title="Binary Series">689</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=690" title="Tom and Jerry">690</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=691" title="Long Substring with Many Repetitions">691</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=692" title="Siegbert and Jo">692</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=693" title="Finite Sequence Generator">693</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=694" title="Cube-full Divisors">694</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=695" title="Random Rectangles">695</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=696" title="Mahjong">696</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=697" title="Randomly Decaying Sequence">697</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=698" title="123 Numbers">698</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=699" title="Triffle Numbers">699</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=700" title="Eulercoin">700</a></td>
+ </tr>
+ </table>
+ <table class="progress">
+ <tr><td class="open"><a href="https://projecteuler.net/problem=701" title="Random Connected Area">701</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=702" title="Jumping Flea">702</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=703" title="Circular Logic II">703</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=704" title="Factors of Two in Binomial Coefficients">704</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=705" title="Total Inversion Count of Divided Sequences">705</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=706" title="$3$-Like Numbers">706</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=707" title="Lights Out">707</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=708" title="Twos Are All You Need">708</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=709" title="Even Stevens">709</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=710" title="One Million Members">710</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=711" title="Binary Blackboard">711</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=712" title="Exponent Difference">712</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=713" title="Turán's Water Heating System">713</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=714" title="Duodigits">714</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=715" title="Sextuplet Norms">715</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=716" title="Grid Graphs">716</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=717" title="Summation of a Modular Formula">717</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=718" title="Unreachable Numbers">718</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=719" title="Number Splitting">719</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=720" title="Unpredictable Permutations">720</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=721" title="High Powers of Irrational Numbers">721</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=722" title="Slowly Converging Series">722</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=723" title="Pythagorean Quadrilaterals">723</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=724" title="Drone Delivery">724</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=725" title="Digit Sum Numbers">725</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=726" title="Falling Bottles">726</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=727" title="Triangle of Circular Arcs">727</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=728" title="Circle of Coins">728</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=729" title="Range of Periodic Sequence">729</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=730" title="Shifted Pythagorean Triples">730</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=731" title="A Stoneham Number">731</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=732" title="Standing on the Shoulders of Trolls">732</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=733" title="Ascending Subsequences">733</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=734" title="A Bit of Prime">734</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=735" title="Divisors of $2n^2$">735</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=736" title="Paths to Equality">736</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=737" title="Coin Loops">737</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=738" title="Counting Ordered Factorisations">738</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=739" title="Summation of Summations">739</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=740" title="Secret Santa">740</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=741" title="Binary Grid Colouring">741</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=742" title="Minimum Area of a Convex Grid Polygon">742</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=743" title="Window into a Matrix">743</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=744" title="What? Where? When?">744</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=745" title="Sum of Squares II">745</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=746" title="A Messy Dinner">746</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=747" title="Triangular Pizza">747</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=748" title="Upside Down Diophantine Equation">748</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=749" title="Near Power Sums">749</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=750" title="Optimal Card Stacking">750</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=751" title="Concatenation Coincidence">751</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=752" title="Powers of $1+\sqrt 7$">752</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=753" title="Fermat Equation">753</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=754" title="Product of Gauss Factorials">754</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=755" title="Not Zeckendorf">755</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=756" title="Approximating a Sum">756</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=757" title="Stealthy Numbers">757</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=758" title="Buckets of Water">758</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=759" title="A Squared Recurrence Relation">759</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=760" title="Sum over Bitwise Operators">760</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=761" title="Runner and Swimmer">761</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=762" title="Amoebas in a 2D Grid">762</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=763" title="Amoebas in a 3D Grid">763</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=764" title="Asymmetric Diophantine Equation">764</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=765" title="Trillionaire">765</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=766" title="Sliding Block Puzzle">766</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=767" title="Window into a Matrix II">767</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=768" title="Chandelier">768</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=769" title="Binary Quadratic Form II">769</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=770" title="Delphi Flip">770</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=771" title="Pseudo Geometric Sequences">771</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=772" title="Balanceable $k$-bounded Partitions">772</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=773" title="Ruff Numbers">773</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=774" title="Conjunctive Sequences">774</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=775" title="Saving Paper">775</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=776" title="Digit Sum Division">776</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=777" title="Lissajous Curves">777</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=778" title="Freshman's Product">778</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=779" title="Prime Factor and Exponent">779</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=780" title="Toriangulations">780</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=781" title="Feynman Diagrams">781</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=782" title="Distinct Rows and Columns">782</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=783" title="Urns">783</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=784" title="Reciprocal Pairs">784</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=785" title="Symmetric Diophantine Equation">785</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=786" title="Billiard">786</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=787" title="Bézout's Game">787</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=788" title="Dominating Numbers">788</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=789" title="Minimal Pairing Modulo $p$">789</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=790" title="Clock Grid">790</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=791" title="Average and Variance">791</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=792" title="Too Many Twos">792</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=793" title="Median of Products">793</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=794" title="Seventeen Points">794</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=795" title="Alternating GCD Sum">795</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=796" title="A Grand Shuffle">796</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=797" title="Cyclogenic Polynomials">797</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=798" title="Card Stacking Game">798</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=799" title="Pentagonal Puzzle">799</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=800" title="Hybrid Integers">800</a></td>
+ </tr>
+ </table>
+ <table class="progress">
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=801" title="$x^y \equiv y^x$">801</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=802" title="Iterated Composition">802</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=803" title="Pseudorandom Sequence">803</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=804" title="Counting Binary Quadratic Representations">804</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=805" title="Shifted Multiples">805</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=806" title="Nim on Towers of Hanoi">806</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=807" title="Loops of Ropes">807</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=808" title="Reversible Prime Squares">808</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=809" title="Rational Recurrence Relation ">809</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=810" title="XOR-Primes">810</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=811" title="Bitwise Recursion">811</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=812" title="Dynamical Polynomials">812</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=813" title="XOR-Powers">813</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=814" title="Mezzo-forte">814</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=815" title="Group by Value">815</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=816" title="Shortest Distance Among Points">816</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=817" title="Digits in Squares">817</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=818" title="SET">818</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=819" title="Iterative Sampling">819</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=820" title="$N$&lt;sup&gt;th&lt;/sup&gt; Digit of Reciprocals">820</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=821" title="123-Separable">821</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=822" title="Square the Smallest">822</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=823" title="Factor Shuffle">823</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=824" title="Chess Sliders">824</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=825" title="Chasing Game">825</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=826" title="Birds on a Wire">826</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=827" title="Pythagorean Triple Occurrence">827</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=828" title="Numbers Challenge">828</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=829" title="Integral Fusion">829</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=830" title="Binomials and Powers">830</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=831" title="Triple Product">831</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=832" title="Mex Sequence">832</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=833" title="Square Triangle Products">833</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=834" title="Add and Divide">834</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=835" title="Supernatural Triangles">835</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=836" title="A Bold Proposition">836</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=837" title="Amidakuji">837</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=838" title="Not Coprime">838</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=839" title="Beans in Bowls">839</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=840" title="Sum of Products">840</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=841" title="Regular Star Polygons">841</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=842" title="Irregular Star Polygons">842</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=843" title="Periodic Circles">843</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=844" title="$k$-Markov Numbers">844</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=845" title="Prime Digit Sum">845</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=846" title="Magic Bracelets">846</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=847" title="Jack's Bean">847</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=848" title="Guessing with Sets">848</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=849" title="The Tournament">849</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=850" title="Fractions of Powers">850</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=851" title="SOP and POS">851</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=852" title="Coins in a Box">852</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=853" title="Pisano Periods 1">853</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=854" title="Pisano Periods 2">854</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=855" title="Delphi Paper">855</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=856" title="Waiting for a Pair">856</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=857" title="Beautiful Graphs">857</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=858" title="LCM">858</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=859" title="Cookie Game">859</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=860" title="Gold and Silver Coin Game">860</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=861" title="Products of Bi-Unitary Divisors">861</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=862" title="Larger Digit Permutation">862</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=863" title="Different Dice">863</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=864" title="Square + 1 = Squarefree">864</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=865" title="Triplicate Numbers">865</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=866" title="Tidying Up B">866</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=867" title="Tiling Dodecagon">867</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=868" title="Belfry Maths">868</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=869" title="Prime Guessing">869</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=870" title="Stone Game IV">870</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=871" title="Drifting Subsets">871</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=872" title="Recursive Tree">872</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=873" title="Words with Gaps">873</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=874" title="Maximal Prime Score">874</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=875" title="Quadruple Congruence">875</a></td>
+ </tr>
+ <tr>
+ <td class="open"><a href="https://projecteuler.net/problem=876" title="Triplet Tricks">876</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=877" title="XOR-Equation A">877</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=878" title="XOR-Equation B">878</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=879" title="Touch-screen Password">879</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=880" title="Nested Radicals">880</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=881" title="Divisor Graph Width">881</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=882" title="Removing Bits">882</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=883" title="Remarkable Triangles">883</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=884" title="Removing Cubes">884</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=885" title="Sorted Digits">885</a></td>
+ <td class="open"><a href="https://projecteuler.net/problem=886" title="Coprime Permutations">886</a></td>
+ </tr>
+ </table>
+ </div>
+ </div>
+ <div class="lightgroup">
+ <div class="container">
+ <div class="ctitle"><a href="../index.html">Home</a></div>
+ </div>
+ </div>
+ </body>
+</html>
diff --git a/euler/update_table.py b/euler/update_table.py
new file mode 100644
index 0000000..8fe74b2
--- /dev/null
+++ b/euler/update_table.py
@@ -0,0 +1,72 @@
+import csv
+from bs4 import BeautifulSoup
+
+
+def read_csv(file_path):
+ with open(file_path, mode="r", newline="") as file:
+ reader = csv.DictReader(file)
+ problems = list(reader)
+ return problems
+
+
+def create_table_content(problems):
+ content = []
+ current_table = []
+ row = []
+ count = 0
+ for problem in problems:
+ if len(row) == 25:
+ current_table.append(row.copy())
+ row = []
+ if count == 100: # Start a new table after every 100 problems
+ content.append(current_table.copy())
+ current_table = []
+ count = 0
+ status_class = "completed" if problem["Solve Status"] == "1" else "open"
+ desc = problem["Description"]
+ id = problem["ID"]
+ row.append(
+ f'<td class="{status_class}"><a href="https://projecteuler.net/problem={id}" title="{desc}">{id}</a></td>'
+ )
+ count += 1
+ if row:
+ current_table.append(row)
+ if current_table:
+ content.append(current_table)
+ return content
+
+
+def update_html(file_path, tables_content):
+ with open(file_path, "r", encoding="utf-8") as file:
+ soup = BeautifulSoup(file, "html.parser")
+
+ # Remove old progress tables
+ container = soup.find("div", class_="container")
+ if container:
+ for table in container.find_all("table", class_="progress"):
+ table.decompose()
+ else:
+ container = soup.new_tag("div", **{"class": "container"})
+ soup.body.append(container) # Append container to body if it does not exist
+
+ # Append new tables to the container
+ for table_content in tables_content:
+ new_table = soup.new_tag("table", **{"class": "progress"})
+ for row in table_content:
+ tr = soup.new_tag("tr")
+ for td in row:
+ tr.append(
+ BeautifulSoup(td + "\n", "html.parser")
+ ) # Adding newline for better formatting
+ new_table.append(tr)
+ container.append(new_table)
+
+ # Write the updated HTML back to the file
+ with open(file_path, "w", encoding="utf-8") as file:
+ file.write(str(soup))
+
+
+# Usage
+problems = read_csv("pe_minimal_problems.csv")
+tables_content = create_table_content(problems)
+update_html("stats.html", tables_content)
diff --git a/index.html b/index.html
index 1b9ee5e..85b4733 100644
--- a/index.html
+++ b/index.html
@@ -108,7 +108,7 @@
<div class="lightgroup">
<div class="container">
<div class="ctitle">Interests</div>
- <img src="https://projecteuler.net/profile/conjfrnk.png" width=200 height=60 alt="Project Euler Stats" loading="lazy" />
+ <a href="euler/stats.html"><img src="https://projecteuler.net/profile/conjfrnk.png" width=200 height=60 alt="Project Euler Stats" loading="lazy" class="projecteuler" /></a>
</div>
</div>
diff --git a/style.css b/style.css
index f9f0173..37570b3 100644
--- a/style.css
+++ b/style.css
@@ -16,6 +16,14 @@ a:hover {
height: auto;
}
+img.projecteuler {
+ box-shadow: 0;
+ transition: box-shadow 0.5s ease-out;
+}
+img.projecteuler:hover {
+ box-shadow: 0 0 1em #000000;
+}
+
.container {
margin-left: auto;
margin-right: auto;
@@ -191,6 +199,9 @@ hr {
padding: 1px;
border-radius: 2px;
}
+ img.projecteuler:hover {
+ box-shadow: 0 0 1em #ffffff;
+ }
hr {
background-image: linear-gradient(to right, rgba(255,255,255,0), rgba(255,255,255,0.75), rgba(255,255,255,0));
}