id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A050212
[ 6, 24, 120, 720, 5040, 1260, 40320, 18144, 362880, 223776, 3628800, 2756160, 39916800, 35307360, 1247400, 479001600, 476910720, 38918880, 6227020800, 6822541440, 889945056, 87178291200, 103440879360, 18478684224 ]
[ "nonn", "tabf" ]
A319005
[ 1, 1, 1, 1, 2, 2, 5, 7, 13, 18, 28, 40, 60, 80, 113, 152, 205, 266, 353, 454, 590, 751, 959, 1210, 1529, 1905, 2381, 2953, 3658, 4501, 5539, 6772, 8278, 10065, 12230, 14801, 17893, 21544, 25921, 31089, 37240, 44478, 53068, 63150, ...
[ "nonn" ]
A002787
[ 2, 7, 37, 216, 1780, 32652, 4665709, 12710266442, 381279977009776 ]
[ "nonn", "hard", "more" ]
A079534
[ 0, 1, 1, 2, 0, 4, 2, 4, 2, 8, 2, 10, 4, 6, 6, 13, 3, 15, 5, 9, 7, 19, 5, 17, 9, 15, 9, 25, 4, 26, 12, 16, 12, 20, 8, 32, 14, 20, 12, 36, 8, 38, 15, 19, 17, 41, 11, 37, 15, 27, 19, 47, 13, 35, 19, 31, 23, ...
[ "nonn" ]
A167949
[ 1, 33, 1056, 33792, 1081344, 34603008, 1107296256, 35433480192, 1133871366144, 36283883716608, 1161084278931456, 37154696925806590, 1188950301625811000, 38046409652025950000, 1.2174851088648304e+21, 3.895952348367457e+22 ]
[ "nonn" ]
A255079
[ 31960, 309136, 4055975, 40081561, 442721280, 5286889521, 60755627185, 697465500736, 8157711718900, 95072386757049, 1104436399020570, 12865323633668100, 149903091744493700, 1745012305355961300 ]
[ "nonn" ]
A159217
[ 3, 8, 17, 35, 69, 137, 269, 533, 1053, 2093, 4157, 8285, 16509, 32957, 65789, 131453, 262653, 525053, 1049597, 2098685, 4196349, 8391677, 16781309, 33560573, 67117053, 134230013, 268451837 ]
[ "nonn" ]
A315278
[ 1, 6, 10, 15, 21, 28, 32, 34, 42, 49, 55, 56, 60, 70, 76, 80, 81, 87, 98, 102, 104, 108, 115, 125, 126, 130, 136, 142, 150, 151, 157, 164, 168, 174, 178, 185, 191, 192, 200, 206, 212, 216, 217, 227, 234, 238, 240, 244, 2...
[ "nonn" ]
A193811
[ 7, 186, 8064, 722340, 150684732, 82103110920, 123085880400552, 516200827188869440 ]
[ "nonn" ]
A025920
[ 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 2, 1, 1, 1, 1, 1, 1, 0, 2, 2, 1, 1, 3, 1, 1, 1, 2, 2, 2, 1, 3, 3, 1, 1, 4, 2, 2, 2, 3, 3, 3, 1, 4, 4, 2, 2, 5, 3, 3, 3...
[ "nonn", "easy" ]
A064292
[ 0, 1, 2, 3, 6, 7, 18, 19, 34, 67, 102, 115, 190, 453, 846, 1305, 2066, 4139, 7676, 13511, 23976, 24381, 24398, 24399, 97984, 136629, 196644, 475235, 926170, 1466185, 2817020, 3850823, 8348662, 8466695, 17694894, 36130539, 36130540, 75209333, ...
[ "nonn" ]
A186508
[ 9, 19, 90, 27, 90, 180, 819, 36, 90, 180, 738, 270, 738, 1638, 7641, 45, 90, 180, 738, 270, 819, 1476, 6570, 360, 738, 1476, 6732, 2457, 6570, 14922, 67968 ]
[ "base", "nonn", "more" ]
A207227
[ 1121, 1256641, 312522517, 125372637881, 47644493869633, 17182219699443152, 6152504033864689000, 2.210806175420208e+21, 7.98188687605046e+23, 2.8854462715088326e+26, 1.0425211196964407e+29 ]
[ "nonn" ]
A256279
[ 1, 1, 0, 0, -1, 0, 0, 0, 0, -4, -2, 0, 0, 2, 0, 0, -1, 0, 4, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, -2, 0, 4, 2, 0, 0, -2, 0, 0, 0, 0, -8, 0, 0, 0, 1, 0, 0, -2, 0, 0, 0, 0, 0, -2, 0, 0, 2,...
[ "sign" ]
A345570
[ 2932, 4147, 4212, 4387, 5427, 5602, 5667, 6627, 6642, 6692, 6707, 6772, 6817, 6822, 6837, 6852, 6867, 6882, 6947, 7012, 7122, 7251, 7316, 7491, 7747, 7857, 7922, 7987, 8052, 8097, 8162, 8227, 8402, 8467, 8532, 8707, 8787, 8962, 9027, 9092...
[ "nonn" ]
A014740
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, ...
[ "sign" ]
A182758
[ 1, 2, 3, 5, 7, 8, 9, 17, 25, 28, 47, 65, 70, 75, 105, 120, 125, 130, 135, 185, 220, 255, 273, 288, 297, 306, 315, 324, 333, 342, 351, 360, 369, 378, 387, 396, 405, 414, 423, 432, 441, 450, 459, 468, 477, 486, 495, 504, 5...
[ "nonn" ]
A272095
[ 1, 1, 24, 27216, 1956864000, 11593630125000000, 7.004354761049264e+24, 5.152466586155457e+35, 5.3685566376685934e+48, 9.038577429104951e+63 ]
[ "nonn", "easy" ]
A274879
[ 1, 1, 2, 2, 4, 2, 4, 6, 12, 12, 4, 8, 8, 20, 40, 48, 32, 10, 20, 24, 16, 70, 140, 180, 160, 80, 28, 56, 72, 64, 32, 252, 504, 672, 672, 480, 192, 84, 168, 224, 224, 160, 64, 924, 1848, 2520, 2688, 2240, 1344, 448, 26...
[ "nonn", "tabf" ]
A376205
[ 2, 31, 59, 67, 79, 83, 101, 103, 109, 113, 127, 137, 139, 151, 173, 181, 191, 199, 227, 229, 239, 241, 263, 283, 293, 311, 317, 331, 347, 349, 353, 367, 373, 379, 383, 397, 421, 433, 449, 461, 463, 479, 487, 491, 499, 523, 5...
[ "nonn", "easy" ]
A140871
[ 26, 4, 19, 20, 9, 12, 23, 25, 32, 24, 10, 3, 2, 29, 17, 21 ]
[ "fini", "full", "nonn", "tabf" ]
A302643
[ 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 2, 0, 2, 0, 3, 1, 3, 1, 3, 1, 3, 2, 4, 2, 4, 2, 5, 2, 5, 2, 5, 2, 5, 3, 6, 4, 6, 4, 7, 5, 7, 5, 7, 5, 7, 5, 8, 5, 8, 5, 8, 6, 8, 6, 8, 7, 8, 8, 9, 8, 9, 8, 1...
[ "nonn", "easy" ]
A372777
[ 6, 5, 1, 2, 3, 9, 2, 8, 3, 0, 5, 0, 9, 1, 0, 3, 0, 8, 4, 7, 1, 0, 8, 4, 9, 1, 8, 8, 8, 5, 2, 0, 5, 3, 1, 7, 2, 2, 6, 3, 7, 4, 0, 8, 0, 9, 9, 3, 2, 2, 0, 0, 2, 1, 5, 2, 2, 5, 5, 2, 8, 6, 4, 1...
[ "nonn", "cons" ]
A262753
[ 4, 9, 25, 100, 361, 1369, 5476, 21609, 85849, 343396, 1371241, 5480281, 21921124, 87665769, 350625625, 1402502500, 5609860201, 22439141209, 89756564836, 359025060969, 1436097847129, 5744391388516, 22977555967081, 91910204694361 ]
[ "nonn" ]
A150838
[ 1, 2, 8, 32, 137, 608, 2750, 12637, 58808, 275862, 1303674, 6196533, 29585580, 141832464, 682176597, 3290368486, 15910303667, 77097021916, 374301652563, 1820278278049, 8865480917493, 43236697516109, 211120315065097, 1032012445805406, 5049817660372877, 24732285539984...
[ "nonn", "walk" ]
A090755
[ 1, 1, 2, 6, 24, 40, 720, 5040, 13440, 362880, 3628800, 13305600, 479001600, 889574400, 29059430400, 1307674368000, 1609445376000, 118562476032000, 6402373705728000, 121645100408832000, 115852476579840000 ]
[ "frac", "nonn" ]
A279061
[ 0, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 2, 2, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 2, 2, 1, 2, 1, 1, 1...
[ "nonn", "easy" ]
A003301
[ 1, 2, 8, 496, 9088, 12032, 12004352, 4139008, 51347456, 378357612544, 4097254359040, 2921482158080, 9353679601664, 4929181267787776, 5689554887507968, 41627810786525050000, 37882178449895850000 ]
[ "nonn", "easy", "frac" ]
A233075
[ 6, 26, 123, 206, 352, 498, 1012, 1350, 1746, 2203, 2724, 3428, 4977, 5804, 6874, 8050, 9335, 10732, 12244, 13874, 17500, 19782, 21928, 24519, 26948, 29860, 32946, 35829, 39254, 42862, 50639, 54814, 59184, 63752, 69045, 74036, 79234, 85224, ...
[ "nonn", "nice", "easy" ]
A343230
[ 0, 0, 0, 1, 0, 0, 1, 0, 2, 3, 2, 0, 1, 0, 0, 1, 0, 2, 3, 2, 0, 1, 0, 4, 5, 4, 6, 7, 6, 4, 5, 4, 0, 1, 0, 2, 3, 2, 0, 1, 0, 0, 1, 0, 2, 3, 2, 0, 1, 0, 4, 5, 4, 6, 7, 6, 4, 5, 4, 0, 1, 0, 2, 3...
[ "nonn", "look", "base" ]
A177426
[ 12, 18, 72, 108, 192, 432, 600, 1152, 1620, 1872, 2088, 2268, 2592, 3168, 4050, 4800, 7128, 7488, 9432, 9720, 10008, 13932, 15972, 17208, 18288, 20232, 21492, 21600, 23040, 23832, 25848, 26892, 27108, 27792, 31392, 32832, 33588, 33750, 3412...
[ "nonn" ]
A127129
[ 1, 3, 18, 139, 1314, 14658, 188012, 2721462, 43837014, 777266691, 15037898091, 315177210360, 7112634073455, 171930274269408, 4431595775955999, 121321383915646540, 3515347574087951400, 107474295428549050000 ]
[ "nonn" ]
A362750
[ 4, 16, 79, 336, 1144, 4351, 17224, 67936, 267919, 1063216, 4233904, 16882191, 67380304, 269142736, 1075602319, 4299846976, 17192621224, 68752838911, 274965310744, 1099740514416, 4398645585679, 17593754283616, 70372850295904, 281485727082511, 1125928050595744 ]
[ "nonn", "easy" ]
A059087
[ 1, 1, 1, 0, 2, 3, 1, 0, 0, 12, 32, 35, 21, 7, 1, 0, 0, 12, 256, 1155, 2877, 4963, 6429, 6435, 5005, 3003, 1365, 455, 105, 15, 1, 0, 0, 0, 1120, 19040, 140616, 686476, 2565260, 7824375, 20110025, 44322135, 84658665, 141115975, 20...
[ "easy", "nonn", "tabf" ]
A223236
[ 1728, 10985, 812225, 32837285, 1697263985, 78951770585, 3843057179285, 183367303999865, 8826695677742465, 423223089093370300, 20328307272501473000, 975647469218575500000, 4.684215918888732e+22 ]
[ "nonn" ]
A155998
[ 0, 1, 1, 0, 4, 0, 1, 3, 3, 1, 0, 8, 0, 8, 0, 1, 5, 10, 10, 5, 1, 0, 12, 0, 40, 0, 12, 0, 1, 7, 21, 35, 35, 21, 7, 1, 0, 16, 0, 112, 0, 112, 0, 16, 0, 1, 9, 36, 84, 126, 126, 84, 36, 9, 1, 0, 20, 0, 24...
[ "nonn", "tabl" ]
A003171
[ 3, 4, 7, 8, 11, 12, 15, 16, 19, 20, 24, 27, 28, 32, 35, 36, 40, 43, 48, 51, 52, 60, 64, 67, 72, 75, 84, 88, 91, 96, 99, 100, 112, 115, 120, 123, 132, 147, 148, 160, 163, 168, 180, 187, 192, 195, 228, 232, 235, 240, 2...
[ "nonn", "fini" ]
A138570
[ 1, 2, 6, 12, 60, 120, 840, 2520, 27720, 55440, 720720, 1081080, 2162160, 36756720, 698377680, 16062686640, 48188059920, 160626866400, 240940299600, 6987268688400, 216605329340400, 288807105787200, 1010824870255200 ]
[ "nonn" ]
A384986
[ 1, 1, 0, 1, 1, 0, 1, 2, 7, 0, 1, 3, 16, 76, 0, 1, 4, 27, 194, 1333, 0, 1, 5, 40, 360, 3568, 26816, 0, 1, 6, 55, 580, 6957, 77602, 596899, 0, 1, 7, 72, 860, 11776, 161328, 1911040, 9687616, 0, 1, 8, 91, 1206, 18325, 2...
[ "sign", "tabl" ]
A112379
[ 1, 2, 1, 3, 2, 1, 4, 1, 3, 2, 5, 1, 2, 4, 1, 3, 1, 6, 2, 3, 5, 1, 2, 1, 4, 2, 7, 1, 3, 4, 1, 6, 2, 3, 2, 5, 1, 3, 1, 8, 2, 1, 4, 5, 2, 7, 1, 3, 1, 4, 3, 6, 1, 2, 1, 4, 2, 9, 3, 2, 5, 1, 6, 3...
[ "nonn", "easy" ]
A203817
[ 1, 8, 1, 3, 3, 7, 6, 4, 9, 2, 3, 9, 1, 6, 0, 3, 4, 9, 9, 6, 1, 3, 1, 3, 4, 5, 3, 1, 2, 7, 1, 0, 4, 0, 0, 1, 9, 1, 0, 7, 6, 6, 4, 1, 8, 1, 3, 7, 2, 6, 0, 0, 8, 0, 8, 6, 3, 6, 1, 4, 8, 0, 7, 8...
[ "nonn", "cons" ]
A356930
[ 1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 19, 21, 22, 24, 27, 28, 29, 31, 32, 33, 36, 38, 42, 44, 48, 49, 53, 54, 56, 57, 58, 59, 62, 63, 64, 66, 71, 72, 76, 77, 79, 81, 83, 84, 87, 88, 93, 96, 97, 98, 99, ...
[ "nonn" ]
A246619
[ 1, 20, 1876, 229680, 31497284, 4600393936, 699440711760, 109341854545792, 17445620031680100, 2827280025640259000, 463882742476664600000, 7.687512257116792e+22, 1.284541927709442e+25, 2.1613386582949526e+27, 3.658169109316672e+29 ]
[ "nonn" ]
A332406
[ 0, 1, 2, 6, 19, 96, 670, 8191, 183149, 7888271 ]
[ "nonn", "more" ]
A219717
[ 35, 129, 1860, 23506, 223069, 1797459, 13042996, 88520416, 572342438, 3549657187, 21174307247, 121698670540, 675451951704, 3628717162080, 18908602544387, 95732083571470, 471623541840462, 2263984217906734, 10603577016473376 ]
[ "nonn" ]
A089009
[ 62178, 159794, 308508, 336390, 350046, 376777, 395837, 492449, 611190, 627072, 643266, 643267, 830501, 887720, 922151, 961608, 1009939, 1011676, 1174998, 1487107, 1492042, 1725364, 1754501, 1780962, 1815913, 2048082, 2235662 ]
[ "nonn" ]
A213597
[ 1, 0, 1, -1, 0, 1, -2, 1, 0, 1, -5, 10, -9, 3, 0, 1, -9, 36, -79, 98, -64, 17, 0, 1, -17, 136, -666, 2192, -5032, 8111, -9013, 6569, -2818, 537, 0, 1, -28, 378, -3242, 19648, -88676, 306308, -819933, 1703404, -2723374, 3285552...
[ "sign", "tabf" ]
A037859
[ 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 0, 0, 0, 0, 0, 0, 0, 3, 2, 1, 0, 0, 0, 0, 0, 0, 4, 3, 2, 1, 0, 0, 0, 0, 0, 5, 4, 3, 2, 1, 0, 0, 0, 0, 6, 5, 4, 3, 2, 1, 0, 0, 0, 7, 6...
[ "nonn", "base" ]
A323519
[ 1, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 4, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 6, 1, 0, 0, 4, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 4, 0, 4, 0, 0, 1, 12, 1, 0, 0, ...
[ "nonn" ]
A186636
[ 0, 5, 34, 129, 356, 805, 1590, 2849, 4744, 7461, 11210, 16225, 22764, 31109, 41566, 54465, 70160, 89029, 111474, 137921, 168820, 204645, 245894, 293089, 346776, 407525, 475930, 552609, 638204, 733381, 838830, 955265, 1083424, 1224069, 1377986, 15...
[ "nonn", "easy" ]
A150833
[ 1, 2, 8, 32, 136, 594, 2674, 12192, 56252, 262166, 1231614, 5819164, 27637200, 131855458, 631385426, 3032777480, 14608882116, 70545450862, 341384364454, 1655193837812, 8039154612280, 39105952390138, 190492183707386, 929104570882912, 4536876256793644, 221772129940999...
[ "nonn", "walk" ]
A212713
[ 1, 2, 1, 4, 5, 2, 5, 8, 1, 4, 7, 4, 13, 14, 5, 14, 17, 2, 5, 8, 7, 14, 17, 8, 17, 26, 1, 4, 7, 10, 13, 16, 11, 22, 25, 4, 13, 22, 13, 40, 41, 14, 41, 44, 5, 14, 23, 16, 41, 50, 17, 44, 53, 2, 5, 8, 11, ...
[ "nonn", "base", "look" ]
A021740
[ 0, 0, 1, 3, 5, 8, 6, 9, 5, 6, 5, 2, 1, 7, 3, 9, 1, 3, 0, 4, 3, 4, 7, 8, 2, 6, 0, 8, 6, 9, 5, 6, 5, 2, 1, 7, 3, 9, 1, 3, 0, 4, 3, 4, 7, 8, 2, 6, 0, 8, 6, 9, 5, 6, 5, 2, 1, 7, 3, 9, 1, 3, 0, 4...
[ "nonn", "cons", "easy" ]
A313835
[ 1, 5, 10, 16, 20, 26, 30, 36, 41, 46, 51, 56, 62, 66, 72, 76, 82, 87, 92, 97, 102, 108, 112, 118, 122, 128, 133, 138, 143, 148, 154, 158, 164, 168, 174, 179, 184, 189, 194, 200, 204, 210, 214, 220, 225, 230, 235, 240, 24...
[ "nonn" ]
A244395
[ 1, 1, 1, 2, 3, 4, 5, 8, 11, 15, 20, 26, 34, 46, 59, 78, 101, 129, 163, 209, 261, 329, 412, 517, 641, 798, 986, 1216, 1493, 1829, 2229, 2721, 3303, 4000, 4841, 5841, 7034, 8458, 10144, 12137, 14512, 17306, 20596, 24483, 29045, ...
[ "nonn" ]
A249294
[ 88, 1094, 6960, 40588, 150112, 469072, 1263044, 3011088, 6514660, 13131956, 24755440, 44396112, 76182120, 125764540, 200780652, 311698092, 471201156, 696406084, 1008398272, 1433424724, 2003585272, 2758886876, 3745643452 ]
[ "nonn" ]
A007149
[ 0, 0, 1, 2, 0, 1, 2, 2, 1, 2, 4, 3, 4, 4, 5, 5, 4, 5, 8, 6, 8, 7, 8, 8, 9, 9, 10, 10, 15, 11, 12, 12, 11, 12, 16, 13, 16, 14, 15, 15, 17, 16, 17, 17, 19, 18, 19, 19, 20, 20, 21, 21, 23, 22, 23, 23, 25, ...
[ "nonn" ]
A381046
[ 1, 7, 44, 888, 5555, 88888, 1111111, 2222222, 22222222, 77777777, 1111111111, 7777777777, 22222222222, 44444444444, 444444444444, 1111111111111, 4444444444444, 7777777777777, 999999999999999, 7777777777777777, 22222222222222224, 77777777777777780 ]
[ "nonn", "base" ]
A119516
[ 0, 1, 9, -3, -83, 25, 785, -235, -7435, 2225, 70425, -21075, -667075, 199625, 6318625, -1890875, -59850875, 17910625, 566915625, -169651875, -5369901875, 1606965625, 50864440625, -15221396875, -481794896875, 144179140625, 4563626765625, -1365684421875, -432272...
[ "sign", "less", "easy" ]
A160573
[ 2, 3, 3, 3, 5, 6, 4, 3, 5, 6, 6, 8, 11, 10, 5, 3, 5, 6, 6, 8, 11, 10, 7, 8, 11, 12, 14, 19, 21, 15, 6, 3, 5, 6, 6, 8, 11, 10, 7, 8, 11, 12, 14, 19, 21, 15, 8, 8, 11, 12, 14, 19, 21, 17, 15, 19, 23, 26, ...
[ "nonn" ]
A137238
[ 2, 11, 13, 17, 19, 23, 29, 31, 41, 61, 71, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, ...
[ "nonn", "base", "easy" ]
A129431
[ 3, 32, 727, 42703, 5988679, 1639714425, 757559332934, 541249158493444, 564262722366313600, 822164422526588600000, 1.6185677952422622e+24, 4.1885631492025826e+27, 1.3926836449718333e+31, 5.83609743608508e+34 ]
[ "nonn" ]
A003621
[ 0, 1, 11, 0, 8, 13, 5, 9, 10, 1, 2, 9, 2, 10, 10, 7, 9, 9, 4, 1, 9, 10, 3, 2, 7, 9, 10, 3, 6, 11, 2, 3, 10, 8, 9, 12, 6, 7, 11, 8, 10, 2, 8, 4, 11, 8, 9, 10, 4, 8, 10, 7, 9, 11, 9, 8, 10, 5, 8, 13, ...
[ "nonn", "base" ]
A233889
[ 14272, 233468, 3580624, 64285728, 1057449360, 19042134996, 317752132336, 5699659660192, 95672524656808, 1710056944521848, 28808634496770576, 513494553573001300, 8673268580432753000, 154254189104019240000 ]
[ "nonn" ]
A005039
[ 1, 1, 4, 22, 147, 1074, 8216, 64798, 521900, 4272967, 35447724, 297308810, 2516830890, 21476307960, 184530904560, 1595190209002, 13863857007924, 121067796450692, 1061770618201680, 9347742325179544, 82584606893075740 ]
[ "nonn" ]
A141474
[ 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1...
[ "nonn" ]
A244103
[ 1, 0, 0, 0, 0, 0, 132, 429, 1001, 2002, 3640, 6188, 97512, 569772, 3625998, 14847987, 62772941, 211719508, 877100400, 3621910050, 21265454080, 120016339560, 727205489010, 3972645105975, 21545198606739, 109895587819830, 577299928495856, 3037242685942432 ]
[ "nonn" ]
A008238
[ 0, 0, 0, 0, 1, 2, 2, 2, 4, 6, 6, 6, 9, 12, 12, 12, 16, 20, 20, 20, 25, 30, 30, 30, 36, 42, 42, 42, 49, 56, 56, 56, 64, 72, 72, 72, 81, 90, 90, 90, 100, 110, 110, 110, 121, 132, 132, 132, 144, 156, 156, 156, 169, ...
[ "nonn", "easy" ]
A259687
[ 1, 1, 1, 81, 5, 7, 1, 1, 13, 1, 11, 1, 185, 1, 1, 7, 1, 27, 1, 1, 9, 1, 9, 9, 11, 3, 15, 325, 1, 11, 17, 1, 1, 1, 1, 1, 5, 25, 33, 11, 7, 47, 801, 5, 193, 1, 1, 1, 19, 11, 13, 25, 21, 17, 635, 5, 37, 1,...
[ "nonn" ]
A297996
[ 2, 3, 5, 2, 6, 3, 7, 4, 8, 5, 9, 6, 10, 7, 11, 8, 12, 9, 13, 10, 14, 11, 15, 12, 16, 13, 17, 14, 18, 15, 19, 16, 20, 17, 21, 18, 22, 19, 23, 20, 24, 21, 25, 22, 26, 23, 27, 24, 28, 25, 29, 26, 30, 27, 31, 2...
[ "nonn", "easy", "less" ]
A059727
[ 0, 2, 2, 6, 12, 30, 72, 182, 462, 1190, 3080, 8010, 20880, 54522, 142506, 372710, 975156, 2552006, 6679640, 17484942, 45771990, 119825862, 313697232, 821252306, 2150037792, 5628825650, 14736381842, 38580227142, 101004149532, 264431978670, 692291393640, 1...
[ "nonn", "easy" ]
A294956
[ 1, 9, 82, 1041, 15626, 280212, 5764802, 134221889, 3486785131, 100000078254, 3138428376722, 106993207077516, 3937376385699290, 155568095598166340, 6568408355713288000, 295147905180426630000, 1.4063084452067724e+22 ]
[ "nonn" ]
A008173
[ 1, 4, 12, 23, 39, 62, 93, 127, 165, 210, 260, 318, 370, 434, 506, 588, 668, 750, 842, 938, 1044, 1150, 1250, 1369, 1490, 1633, 1762, 1893, 2035, 2179, 2353, 2503, 2649, 2822, 2993, 3206, 3371, 3548, 3749, 3946, 4189, 4369, 4565, 4...
[ "nonn" ]
A252986
[ 2, 733, 2366, 1056553, 3411338, 1523548261, 4919146598, 2196955535377, 7093405982546, 3168008358464941, 10228686507684302, 4568265855950909000, 14749758850674780000, 6.587436196272852e+21, 2.1269142033986524e+22, 9.499078426759597e+24 ]
[ "nonn", "easy" ]
A085575
[ 0, 1, 4, 9, 36, 49, 100, 144, 225, 361, 400, 441, 729, 900, 1225, 1369, 1444, 1936, 2025, 2209, 2704, 3600, 3969, 4225, 4900, 5776, 7225, 7396, 7921, 8836, 9409, 10000, 10404, 11449, 11881, 14400, 14884, 17424, 19044, 19881, 21025, 22...
[ "base", "easy", "nonn" ]
A099642
[ 1, 10, 9, 26, 25, 74, 169, 82, 441, 170, 133, 348, 6889, 166, 3025, 344, 559, 1602, 9981, 820, 9979, 986, 4333, 1236, 9191, 694, 3249, 1652, 3481, 9378, 34969, 3118, 859329, 5636, 36829, 3324, 51947, 3994, 6561, 5000, 15835, 16806, ...
[ "nonn" ]
A038553
[ 1, 1, 3, 1, 15, 6, 7, 1, 63, 30, 341, 12, 819, 14, 15, 1, 255, 126, 9709, 60, 63, 682, 2047, 24, 25575, 1638, 13797, 28, 475107, 30, 31, 1, 1023, 510, 4095, 252, 3233097, 19418, 4095, 120, 41943, 126, 5461, 1364, 4095, 4094, ...
[ "nonn" ]
A200555
[ 26, 280, 1184, 3396, 7778, 15476, 27806, 46346, 72902, 109528, 158422, 222162, 303412, 405134, 530518, 683014, 866156, 1083954, 1340420, 1639900, 1986968, 2386470, 2843276, 3362828, 3950486, 4611980, 5353268, 6180592, 7100158, 8118840 ]
[ "nonn" ]
A244257
[ 2, 3, 9, 7, 9, 4, 5, 5, 8, 6, 1, 1, 4, 4, 3, 6, 3, 3, 7, 4, 0, 6, 1, 3, 9, 3, 7, 8, 9, 0, 6, 0, 6, 6, 0, 5, 5, 8, 8, 0, 8, 2, 3, 4, 0, 0, 1, 5, 7, 6, 3, 1, 1, 6, 0, 3, 1, 1, 1, 4, 9, 9, 7, 9...
[ "nonn", "cons", "easy" ]
A106058
[ 0, 0, 0, 2, 9, 22, 42, 70, 107, 154, 212, 282, 365, 462, 574, 702, 847, 1010, 1192, 1394, 1617, 1862, 2130, 2422, 2739, 3082, 3452, 3850, 4277, 4734, 5222, 5742, 6295, 6882, 7504, 8162, 8857, 9590, 10362, 11174, 12027, 12922, 13860,...
[ "nonn", "easy" ]
A177394
[ 1, 2, 15, 529, 54945, 11143746, 3654567547, 1750747708767, 1148330852468801, 985536277566434000, 1.0700888989321584e+21, 1.432192631553017e+24, 2.3142011374990123e+27, 4.438705436711734e+30 ]
[ "nonn" ]
A378044
[ 1, 2, 17, 349, 10661, 444161, 23447635, 1500738989, 112954047113, 9777254959729, 956963374613471, 104510139881448800, 12599380858829314000, 1.6620184390199725e+21, 2.3812837944615807e+23, 3.6825779588890274e+25, 6.113887910300602e+27, 1.0846119991811622e+30 ]
[ "nonn" ]
A276460
[ 0, 1, 2, 5, 17, 37, 101, 197, 257, 401, 577, 677, 901, 1297, 1601, 2917, 3137, 4357, 5477, 7057, 8101, 8837, 10001, 12101, 13457, 14401, 15377, 15877, 16901, 17957, 20737, 21317, 22501, 24337, 25601, 28901, 30977, 32401, 33857, 41617, 4...
[ "nonn" ]
A094318
[ 2, 3, 5, 7, 11, 23, 29, 43, 47, 59, 67, 79, 83, 97, 101, 113, 131, 137, 151, 157, 173, 181, 191, 223, 227, 239, 241, 263, 269, 281, 283, 293, 311, 313, 317, 331, 337, 349, 353, 373, 389, 421, 439, 443, 463, 467, 479, 487, ...
[ "nonn", "base" ]
A078286
[ 20, 21, 20, 21, 22, 26, 204, 209, 207, 203, 217, 222, 205, 215, 235, 212, 236, 244, 201, 213, 219, 237, 249, 267, 291, 202, 206, 214, 218, 226, 254, 262, 274, 278, 298, 2114, 2041, 2119, 2004, 2076, 2148, 2172, 2101, 2123, 2167,...
[ "base", "easy", "nonn" ]
A161260
[ 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 2, 3, 3, 4, 4, 5, 5, 7, 6, 7, 7, 9, 8, 9, 10, 12, 11, 12, 13, 15, 14, 16, 16, 19, 17, 20, 19, 23, 22, 25, 24, 29, 27, 32, 31, 39, 36, 42, 41...
[ "nonn" ]
A211263
[ 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 3, 3, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 3, 3, 1, 1, 3, 3, 2, 2, 2, 2, 1, 1, 4, 4, 1, 1, 2, 2, 2, 2, 3, 3, 1, 1, 4, 4, 1, 1, 3...
[ "nonn" ]
A197434
[ 3, 34, 5032, 5184780, 41434710920, 2476133354164264, 1.1129987453516761e+21 ]
[ "nonn" ]
A139563
[ 1, 2, 3, 13, 21, 34, 610, 196418, 1134903170, 20365011074, 1.5635695580168194e+40, 1.0492526906656465e+78 ]
[ "nonn", "base", "less" ]
A250822
[ 13824, 176184, 2040816, 20732624, 200874408, 1873942536, 17157277544, 155136190168, 1393116306944, 12456789266800, 111112629202296, 989654662793656, 8807137316538216, 78337133410864580, 696584179015764200 ]
[ "nonn" ]
A335544
[ 216, 240, 288, 360, 432, 480, 504, 540, 576, 600, 648, 672, 720, 792, 840, 864, 936, 960, 972, 1008, 1056, 1080, 1120, 1152, 1200, 1248, 1260, 1296, 1320, 1344, 1440, 1512, 1560, 1584, 1620, 1680, 1728, 1800, 1872, 1920, 1944, 2016, ...
[ "nonn" ]
A051659
[ 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 1, 1, 0, 0, 1, 0, 2, 0, 2, 1, 0, 0, 0, 2, 0, 1, 1, 0, 4, 3, 1, 0, 0, 0, 0, 0, 0, 2, 1, 0, 1, 4, 3, 1 ]
[ "nonn" ]
A071590
[ 10, 20, 21, 30, 31, 32, 40, 41, 42, 43, 50, 51, 52, 53, 54, 60, 61, 62, 63, 64, 65, 70, 71, 72, 73, 74, 75, 76, 80, 81, 82, 83, 84, 85, 86, 87, 90, 91, 92, 93, 94, 95, 96, 97, 98, 100, 110, 120, 130, 140, 150, 160,...
[ "nonn", "easy", "base" ]
A355185
[ 8, 6, 8, 4, 1, 0, 0, 4, 8, 8, 2, 4, 6, 1, 3, 5, 4, 3, 9, 7, 2, 8, 3, 7, 1, 1, 6, 2, 5, 7, 6, 9, 3, 0, 8, 2, 3, 8, 6, 3, 6, 4, 3, 9, 3, 0, 7, 0, 9, 8, 2, 4, 8, 6, 8, 0, 9, 5, 3, 2, 9, 6, 1, 9...
[ "nonn", "cons" ]
A378254
[ 1, 1, 1, 1, 1, 2, 67, 1002, 8009, 43759, 184758, 646878, 1971883, 5541966, 16231216, 60090032, 290305577, 1523150157, 7564006759, 34099637859, 139541849878, 526321168143, 1878476551128, 6603812572941, 24052434515891, 94278969044262, 396750746960712 ]
[ "nonn", "easy" ]
A038879
[ 2, 3, 5, 13, 31, 37, 41, 43, 53, 67, 71, 79, 83, 89, 107, 151, 157, 163, 173, 191, 197, 199, 227, 239, 241, 271, 277, 281, 283, 293, 307, 311, 317, 347, 359, 373, 397, 401, 409, 431, 439, 443, 449, 467, 479, 521 ]
[ "nonn" ]
A330691
[ 1, 2, 3, 4, 5, 3, 7, 8, 9, 5, 11, 4, 13, 7, 5, 16, 17, 9, 19, 5, 3, 11, 23, 3, 25, 13, 27, 7, 29, 5, 31, 32, 11, 17, 7, 9, 37, 19, 13, 8, 41, 3, 43, 11, 9, 23, 47, 16, 49, 25, 17, 13, 53, 27, 11, 8, 19, ...
[ "nonn" ]
A102431
[ 2, 4, 8, 10, 15, 17, 24, 28, 35, 37, 49, 51, 60, 65, 80, 82, 99, 101, 121, 127, 144, 146, 176, 180, 203, 211, 243, 245, 283, 285, 328, 336, 375, 380, 443, 445, 494, 504, 574, 576, 650, 652, 733, 748, 825, 827, 942, 946, ...
[ "easy", "nonn" ]
A227054
[ 1, 3, 1, 0, 3, 1, 3, 15, 0, 1, 6, 3, 6, 15, 1, 0, 78, 21, 10, 6, 1, 3, 45, 190, 0, 3, 55, 1, 15, 10, 15, 28203, 45, 105, 3, 1, 465, 120, 55, 3, 21, 15, 21, 3570, 1, 6, 210, 861, 0, 6, 3, 15, 105, 21945, 1, ...
[ "nonn" ]
A381251
[ 0, 0, 0, 0, 0, 1, 1, 3, 4, 10, 14, 27, 40, 52, 74, 133, 229, 276, 457, 626, 744, 1189, 1599, 2498, 4450, 5862, 6752, 8835, 10139, 13189, 32481, 41614, 60099, 67900, 122825, 138101, 195147, 274193, 342783, 477381, 661502, 736865, 125...
[ "nonn" ]