id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A124322
[ 1, 1, 1, 1, 2, 3, 5, 7, 3, 12, 25, 15, 37, 91, 60, 15, 128, 329, 315, 105, 457, 1415, 1533, 630, 105, 1872, 6297, 7623, 4410, 945, 8169, 29431, 42150, 27405, 7875, 945, 37600, 151085, 233475, 176715, 69300, 10395, 188685, 802099, ...
[ "nonn", "tabf" ]
A287021
[ 1, 1, 1, 1, 1, 1, 1, 1, 90, 5712, 1, 1, 1260, 416064, 168168000, 1, 60, 28440, 42045600, 76385194200, 155840192585280, 1, 180, 415800, 3216282300, 31168037156256, 342718542439257600, 3.5746414633388385e+21, 1, 630, 8408400, 320818773240, 14181456923282...
[ "nonn", "tabl" ]
A109323
[ 2, 9, 49, 423, 1333, 4425, 8763, 14089, 22825, 40291, 178705, 661285, 4543141, 20706715, 29243521, 31089603, 32341621, 99158905, 417976441, 1186496401, 1540962199, 2097064537, 8602909969 ]
[ "nonn", "more" ]
A321028
[ 5, 4, 3, 3, 3, 3, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0...
[ "hard", "sign" ]
A302599
[ 5, 6, 7, 8, 15, 16, 17, 25, 26, 35, 50, 51, 52, 53, 55, 56, 57, 58, 59, 60, 61, 62, 65, 66, 67, 68, 69, 70, 71, 75, 76, 77, 78, 79, 80, 85, 86, 87, 88, 89, 95, 96, 97, 98, 105, 106, 107, 115, 116, 125, 150, 151, ...
[ "nonn", "base", "easy" ]
A047850
[ 1, 2, 7, 32, 157, 782, 3907, 19532, 97657, 488282, 2441407, 12207032, 61035157, 305175782, 1525878907, 7629394532, 38146972657, 190734863282, 953674316407, 4768371582032, 23841857910157, 119209289550782, 596046447753907 ]
[ "nonn", "easy" ]
A164103
[ 5, 2, 6, 3, 7, 8, 9, 0, 1, 3, 9, 1, 4, 3, 2, 4, 5, 9, 6, 7, 1, 1, 7, 2, 8, 5, 3, 3, 2, 6, 7, 2, 8, 0, 6, 0, 5, 5, 0, 0, 6, 3, 9, 6, 8, 3, 8, 6, 1, 7, 5, 5, 0, 0, 0, 7, 5, 3, 7, 8, 6, 3, 3, 3...
[ "cons", "nonn" ]
A143747
[ 1, 5, 8, 13, 17, 49, 81, 148, 169, 316, 321, 725, 1957, 2777, 24217 ]
[ "fini", "full", "nonn" ]
A236948
[ 601976968, 12569519212796, 178570730290963780, 3.048340953731729e+21, 4.789906909887032e+25, 7.818235603383834e+29, 1.254168526026088e+34 ]
[ "nonn" ]
A258922
[ 1, 2, 18, 302, 7562, 253542, 10685794, 543309230, 32378850042, 2214215333750, 170939286647570, 14707184259036414, 1395561779648175400, 144795755972202600000, 1.6308198003201871e+22, 1.981633767850818e+24, 2.5840631180993756e+26, 3.599477635923159e+28 ]
[ "nonn" ]
A086861
[ 2, 2, 3, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 11, 12, 13, 14, 14, 15, 16, 17, 18, 18, 19, 21, 21, 22, 22, 23, 23, 26, 26, 27, 28, 29, 30, 31, 31, 32, 33, 34, 34, 36, 36, 37, 37, 39, 41, 41, 42, 42, 43, 43, 45, 46,...
[ "nonn", "easy" ]
A137783
[ 1, 4, 44, 1028, 40864, 2484032, 214050784, 24831582176, 3731039384576, 704879630525696, 163539441616948740, 45712130697710084000, 1.51509931512154e+22, 5.875388829103414e+24, 2.635427286694074e+27, 1.3539180664337345e+30 ]
[ "nonn" ]
A302772
[ 10576, 26575, 27476, 30637, 36190, 52628, 65402, 66219, 70232, 110283, 112171, 122815, 124523, 142092, 143096, 161657, 165231, 167293, 185128, 214600, 249801, 251948, 270843, 280903, 283415, 285458, 296687, 298061 ]
[ "nonn" ]
A094031
[ 0, 1, 0, 5, 0, 18, 0, 57, 0, 183, 0, 604, 0, 2047, 0, 7145, 0, 25471, 0, 92193 ]
[ "nonn", "more" ]
A341546
[ 1, 0, 2, 12, 50, 280, 1442, 7812, 42338, 232176, 1280642, 7103932, 39579410, 221340808, 1241708834, 6984796852, 39382895810, 222512915680, 1259482604546, 7140546372204, 40541480041970, 230480474747640, 1311841695315362, 7474722997813732, 42631911134818850 ]
[ "nonn" ]
A289412
[ 1, 1, 1, 2, 2, 1, 3, 4, 6, 2, 5, 1, 6, 1, 1, 8, 8, 2, 9, 4, 3, 5, 11, 2, 20, 2, 9, 3, 14, 1, 15, 16, 5, 8, 1, 12, 18, 3, 3, 8, 20, 1, 21, 5, 4, 11, 23, 4, 14, 20, 4, 12, 26, 3, 5, 1, 9, 14, 29, 2, ...
[ "nonn", "frac" ]
A037381
[ 1, 2, 7, 27, 28, 30, 35, 40, 51, 54, 55, 60, 71, 121, 127, 132, 135, 136, 137, 138, 139, 142, 147, 152, 157, 160, 161, 175, 176, 177, 178, 179, 180, 185, 190, 195, 202, 210, 211, 212, 214, 227, 232, 235, 238, 239, 242, 251...
[ "nonn", "base" ]
A198389
[ 5, 10, 13, 15, 17, 20, 25, 26, 25, 29, 30, 34, 37, 35, 41, 39, 40, 50, 45, 52, 51, 50, 61, 53, 55, 65, 58, 60, 65, 65, 65, 68, 75, 74, 85, 70, 82, 78, 73, 75, 80, 85, 85, 85, 89, 91, 101, 87, 100, 90, 113, 95, 10...
[ "nonn" ]
A307923
[ 0, 1, 16, 744, 56256, 6385920, 1018114560, 217234805760, 59809766768640, 20651520261980160, 8740913386202726000, 4.451168534087349e+21, 2.6850070398582386e+24, 1.8934594881218807e+27, 1.543515756205349e+30, 1.4403633301828027e+33 ]
[ "nonn" ]
A052569
[ 1, 1, 2, 12, 48, 240, 2160, 15120, 120960, 1451520, 14515200, 159667200, 2395008000, 31135104000, 435891456000, 7846046208000, 125536739328000, 2134124568576000, 44816615940096000, 851515702861824000 ]
[ "easy", "nonn" ]
A308248
[ 0, 1, 9, 16, 81, 784, 6561, 18496, 1478656, 43046721, 281165824, 893352321, 5859137025, 41368305664, 405026597889, 1088266240000, 15965210931201, 36991307874304, 583272781383681, 1318789102698496 ]
[ "nonn", "base" ]
A250319
[ 32, 480, 1152, 14452, 119004, 1357424, 14866258, 166783380, 1809575752 ]
[ "nonn" ]
A344529
[ 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 2, 1, 1, 4, 1, 4, 0, 0, 6, 3, 0, 0, 7, 8, 3, 0, 5, 3, 8, 0, 1, 0, 5, 5, 3, 10, 0, 10, 11, 5, 5, 0, 3, 5, 0, 0, 11, 0, 11, 18, 15, 5, 0, 6, 10, 0, 6, 0, 26, 4, 0,...
[ "nonn" ]
A084544
[ 1, 2, 3, 4, 11, 12, 13, 14, 21, 22, 23, 24, 31, 32, 33, 34, 41, 42, 43, 44, 111, 112, 113, 114, 121, 122, 123, 124, 131, 132, 133, 134, 141, 142, 143, 144, 211, 212, 213, 214, 221, 222, 223, 224, 231, 232, 233, 234, 241,...
[ "nonn", "base" ]
A214370
[ 1, 2, 1, 3, 2, 4, 5, 3, 6, 7, 4, 3, 5, 8, 9, 6, 10, 7, 5, 11, 12, 13, 8, 14, 9, 7, 15, 10, 16, 17, 18, 11, 19, 12, 9, 13, 20, 21, 14, 22, 23, 24, 15, 11, 9, 16, 12, 17, 25, 18, 26, 27, 19, 14, 9, 11, 28, ...
[ "nonn", "easy" ]
A136305
[ 3, 8, 20, 47, 109, 253, 588, 1367, 3178, 7388, 17175, 39927, 92819, 215778, 501623, 1166132, 2710928, 6302143, 14650705, 34058757, 79177004, 184064203, 427897358, 994740672, 2312491503, 5375890523, 12497429235, 29052998162, 67540026539, 157011512528 ]
[ "nonn", "easy" ]
A151437
[ 1, 0, 2, 2, 14, 28, 148, 408, 1948, 6316, 29164, 103336, 473860, 1770364, 8141872, 31491484, 145696432, 577601620, 2689508560, 10864037780, 50889023352, 208655144644, 982532205120, 4078460733332, 19292955235136, 80919972951468, 384307594445168, 1626307851201068,...
[ "nonn", "walk" ]
A154901
[ 9, 3, 0, 5, 9, 3, 6, 8, 1, 6, 0, 7, 0, 1, 8, 8, 8, 4, 5, 1, 1, 1, 3, 4, 7, 7, 6, 7, 8, 6, 6, 5, 0, 2, 4, 9, 3, 1, 8, 7, 9, 3, 0, 0, 0, 7, 8, 4, 0, 7, 5, 3, 6, 5, 5, 9, 8, 5, 2, 6, 0, 2, 3, 7...
[ "nonn", "cons" ]
A273636
[ 9, 1, 0, 4, 5, 3, 1, 8, 1, 4, 0, 9, 2, 4, 2, 2, 7, 9, 1, 6, 9, 5, 3, 8, 0, 3, 4, 4, 6, 6, 2, 5, 8, 6, 2, 8, 5, 7, 4, 5, 8, 6, 5, 8, 0, 2, 9, 4, 3, 3, 8, 0, 1, 2, 6, 5, 0, 6, 1, 5, 5, 4, 9, 9...
[ "nonn", "cons" ]
A032254
[ 1, 1, 2, 5, 8, 16, 29, 59, 124, 287, 670, 1634, 3992, 9867, 24320, 60290, 149124, 370146, 918796, 2286685, 5697484, 14227797, 35583724, 89168380, 223794690, 562624780, 1416520302, 3571567951, 9017077418, 22794093212 ]
[ "nonn" ]
A324681
[ 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 0, -1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, -1, 0, 1, 1, 0, -1, 0, 1, 0, -1, 1, 1, 0, -1, -1, -1, -1, 1, 0, 1, 0, 0, 0, -1, 1, 0, -1, -1, 0, 1, 0, -1, 1, 0, 1, ...
[ "sign" ]
A073327
[ 64, 34, 58, 56, 60, 42, 52, 65, 49, 42, 39, 63, 87, 99, 104, 65, 96, 109, 73, 86, 107, 141, 165, 163, 167, 149, 159, 172, 156, 149, 100, 134, 158, 156, 160, 142, 152, 165, 149, 142, 84, 118, 142, 140, 144, 126, 136, 149, ...
[ "nonn", "word", "look" ]
A374472
[ 1, 6, 10, 14, 15, 21, 22, 26, 33, 34, 35, 36, 38, 39, 46, 51, 55, 57, 58, 62, 64, 65, 69, 74, 77, 82, 85, 86, 87, 91, 93, 94, 95, 100, 106, 111, 115, 118, 119, 122, 123, 129, 133, 134, 141, 142, 143, 144, 145, 146, 1...
[ "nonn" ]
A073669
[ 1, 4, 6, 8, 10, 12, 42, 24, 72, 20, 132, 36, 52, 14, 30, 16, 68, 54, 76, 80, 126, 88, 92, 24, 100, 26, 108, 112, 116, 30, 310, 128, 66, 204, 70, 36, 74, 76, 78, 120, 902, 84, 430, 44, 360, 460, 188, 240, 294, 100, 20...
[ "nonn" ]
A372154
[ 1, 2, 12, 98, 1128, 16442, 293356, 6195114, 151432112, 4209004466, 131188519764, 4533821784098, 172125130420744, 7122734349079338, 319148172778019700, 15395906192167995000, 795673541794111700000, 4.386283729152953e+22 ]
[ "nonn" ]
A207335
[ 3, 3, 2, 4, 1, 4, 5, 2, 3, 1, 7, 1, 1, 6, 5, 6, 2, 2, 1, 9, 1, 1, 2, 1, 5, 7, 1, 1, 11, 1, 8, 1, 4, 4, 2, 13, 2, 1, 2, 1, 5, 1, 4, 2, 11, 1, 8, 1, 4, 1, 1, 2, 16, 1, 1, 4, 10 ]
[ "nonn", "easy" ]
A181104
[ 1, 24, -252, 2048, -4830, -6048, 16744, 0, 177147, -115920, -534612, -516096, 577738, 401856, 1217160, 0, 6905934, 4251528, -10661420, -9891840, -4219488, -12830688, -18643272, 0, 48828125, 13865712, 0, 34291712, -128406630, 29211840 ]
[ "sign", "mult" ]
A025877
[ 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 3, 4, 3, 4, 3, 4, 4, 5, 4, 5, 4, 6, 5, 6, 5, 6, 6, 7, 6, 8, 6, 8, 7, 8, 8, 9, 8, 10, 8, 10, 9, 11, 10, 11...
[ "nonn", "easy" ]
A177443
[ 1, 2, 0, 3, 1, 0, 3, 2, 0, 0, 3, 3, 2, 0, 0, 3, 3, 4, 0, 0, 0, 3, 3, 6, 1, 0, 0, 0, 3, 3, 6, 2, 0, 0, 0, 0, 3, 3, 6, 3, 3, 0, 0, 0, 0, 3, 3, 6, 3, 6, 0, 0, 0, 0, 0, 3, 3, 6, 3, 9, 2, 0, 0, 0...
[ "nonn", "tabl", "uned" ]
A003219
[ 1, 3, 5, 7, 9, 20, 42, 108, 110, 132, 198, 209, 222, 266, 288, 312, 378, 400, 468, 512, 558, 648, 738, 782, 804, 828, 918, 1032, 1098, 1122, 1188, 1212, 1278, 1300, 1368, 1458, 1526, 1548, 1638, 1704, 1728, 1818, 1974, 2007, 202...
[ "nonn", "base" ]
A054425
[ 1, 2, 3, 4, 0, 7, 8, 5, 6, 15, 16, 0, 0, 0, 31, 32, 9, 11, 12, 14, 63, 64, 0, 10, 0, 13, 0, 127, 128, 17, 0, 23, 24, 0, 30, 255, 256, 0, 19, 0, 0, 0, 28, 0, 511, 512, 33, 18, 20, 47, 48, 27, 29, 62, 1023, 1...
[ "nonn", "tabl", "nice" ]
A344173
[ 0, 1, 2, 1, 1, 1, 1, 2, 1, 3, 3, 3, 3, 3, 2, 2, 2, 4, 3, 1, 3, 4, 2, 3, 2, 3, 2, 3, 2, 4, 3, 4, 4, 4, 3, 1, 3, 5, 2, 4, 2, 3, 2, 3, 3, 3, 5, 1, 3, 3, 4, 1, 3, 4, 3, 2, 4, 4, 4, 2, 4, 4, 4, 3...
[ "nonn" ]
A278616
[ 3, 8, 21, 56, 148, 393, 1041, 2761, 7318, 19403, 51436, 136366, 361513, 958413, 2540831, 6735996, 17857733, 47342548, 125509476, 332737401 ]
[ "nonn", "more" ]
A031769
[ 8283, 33128, 74535, 132504, 207035, 298128, 405783, 530000, 670779, 828120, 1002023, 1192488, 1399515, 1623104, 1863255, 2119968, 2393243, 2683080, 2989479, 3312440, 3651963, 4008048, 4380695, 4769904, 5175675, 5598008, 6036903, 6492360 ]
[ "nonn" ]
A248531
[ 50, 114, 196, 214, 296, 624, 706, 770, 870, 934, 1034, 1180, 1280, 1426, 1444, 1590, 1690, 1754, 1836, 1936, 2000, 2164, 2246, 2264, 2346, 2574, 2674, 2756, 2820, 2984, 3066, 3084, 3230, 3330, 3394, 3494, 3576, 3640, 3740, 3886, 3904, ...
[ "nonn", "easy" ]
A124890
[ 1, 1, 3, 11, 47, 216, 1047, 5263, 27191, 143484, 770047, 4190031, 23062044, 128170182, 718257014, 4054089110, 23026890216, 131517480529, 754865316100, 4351785130675, 25187530716367, 146305151254984, 852604651815745 ]
[ "nonn" ]
A081473
[ 2, 4, 8, 16, 44, 194, 946 ]
[ "hard", "more", "nonn" ]
A261592
[ 1, 1, 2, 5, 14, 42, 132, 429, 1430, 4862, 16795, 58773, 207907, 742220, 2670564, 9674496, 35256723, 129164090, 475418625, 1757248194, 6519768464, 24272733060, 90648139140, 339497371575, 1274821281747, 4798525000860, 18102238168134, 68430875696534 ]
[ "nonn" ]
A351355
[ 0, 1, 3, 8, 13, 21, 31, 42, 55, 71, 87, 107, 128, 150, 174, 203, 231, 260, 294, 328, 364, 404, 442, 486, 530, 576, 624, 674, 726, 780, 838, 895, 953, 1017, 1079, 1146, 1216, 1284, 1354, 1430, 1505, 1583, 1663, 1745, 1827, 1913...
[ "nonn" ]
A332730
[ 1, 3, 3, 5, 3, 9, 3, 8, 5, 9, 3, 15, 3, 9, 9, 11, 3, 15, 3, 15, 9, 9, 3, 24, 5, 9, 8, 15, 3, 27, 3, 15, 9, 9, 9, 25, 3, 9, 9, 24, 3, 27, 3, 15, 15, 9, 3, 33, 5, 15, 9, 15, 3, 24, 9, 24, 9, 9, 3, 45,...
[ "nonn", "mult" ]
A168273
[ 0, 4, 4, 8, 8, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28, 32, 32, 36, 36, 40, 40, 44, 44, 48, 48, 52, 52, 56, 56, 60, 60, 64, 64, 68, 68, 72, 72, 76, 76, 80, 80, 84, 84, 88, 88, 92, 92, 96, 96, 100, 100, 104, 104, ...
[ "nonn", "easy" ]
A302361
[ 1, 2, 31, 77, 6580, 330505, 188443738, 169314399506, 675015247638492 ]
[ "nonn" ]
A372211
[ 1, 0, 4, 9, 36, 125, 535, 1715, 7716, 26739, 111379, 419265, 1683351, 6518499, 26081381, 102089384, 408200740, 1612289384, 6441151477, 25602561864, 102352339411, 408402686750, 1635036583239, 6541552959219, 26227281703575, 105151396500125, 422159487904405, 169536...
[ "nonn", "easy" ]
A135102
[ 1, 1, 2, 3, 5, 8, 13, 3, 12, 27, 29, 36, 33, 41, 58, 51, 31, 64, 89, 45, 74, 83, 39, 168, 145, 193, 170, 129, 149, 104, 211, 289, 274, 175, 257, 252, 125, 161, 318, 347, 447, 316, 317, 285, 450, 107, 253, 648, 363, 301...
[ "nonn", "base" ]
A240605
[ 1, 2, 10, 59, 397, 2878, 21266, 162732, 1253128, 9839212, 77644825, 620377508, 4981522538, 40351448045, 328421827064, 2690586461296, 22139293490054, 183106636176023, 1520309861062921, 12675106437486944, 106033283581264580, 890035798660219800 ]
[ "nonn" ]
A041221
[ 1, 22, 485, 10692, 235709, 5196290, 114554089, 2525386248, 55673051545, 1227332520238, 27056988496781, 596481079449420, 13149640736384020, 289888577279897860, 6390698340894137000, 140885252076950930000, 3.105866244033814e+21, 6.846994262082087e+22 ]
[ "nonn", "frac", "easy", "less" ]
A248814
[ 1, 1, 924, 17153136, 2308743493056, 1370874167589326300, 2.6701777366371493e+24, 1.4007180988362845e+31, 1.718892895848665e+38, 4.4394130438411285e+45 ]
[ "nonn", "easy" ]
A234966
[ 0, 106, 104, 104, 105, 102, 102, 408, 104, 107, 203, 109, 103, 103, 1056, 3703, 4604, 207, 606, 11018, 3069, 20064 ]
[ "nonn", "base", "more", "hard" ]
A378390
[ 3, 0, 6, 9, 4, 8, 9, 5, 7, 2, 4, 0, 3, 1, 0, 0, 9, 5, 9, 0, 7, 7, 0, 3, 1, 4, 7, 8, 4, 0, 5, 0, 6, 7, 3, 3, 8, 7, 9, 6, 5, 1, 0, 7, 4, 6, 3, 1, 6, 1, 0, 1, 8, 7, 7, 3, 0, 7, 0, 1, 5, 3, 8, 6...
[ "nonn", "cons", "easy" ]
A125375
[ 1, 12, 102, 762, 6442, 55562, 486102, 4278734, 37774538, 333954114, 2954331502, 26143583918, 231384164326, 2048007248286, 18127716503740, 160457920059992, 1420307031097690, 12572010392961098, 111282760217915180 ]
[ "nonn", "base" ]
A346820
[ 10, 43, 205, 1066, 5988, 36052, 231164, 1570176, 11247965, 84653400, 667168482, 5490444397, 47062089729, 419239463176, 3873647216453, 37057205796114, 366456723771549, 3740565770881821, 39358576699041990, 426383570139629700, 4750448584867131000 ]
[ "nonn" ]
A169483
[ 1, 38, 1406, 52022, 1924814, 71218118, 2635070366, 97497603542, 3607411331054, 133474219248998, 4938546112212926, 182726206151878270, 6760869627619496000, 250152176221921350000, 9.25563052021109e+21 ]
[ "nonn" ]
A371552
[ 1, -3, 3, 18, -57, -138, 246, 4281, 13383, -156906, -450822, -957729, 23375886, 289894875, -179027895, -3403581357, -174968380137, -419588974650, 4439383168602, 50400469832883, 1027067921064738, 428364930324489, -18456487538087144, -1019962180000311300 ]
[ "sign" ]
A020621
[ 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 71, 79, 83, 97, 101, 107, 109, 113, 127, 139, 149, 151, 157, 163, 173, 193, 199, 241, 257, 307, 317, 337, 353, 389, 421, 431, 433, 467, 491, 499, 503, 509, 54...
[ "nonn", "fini", "full" ]
A142193
[ 67, 107, 227, 307, 347, 467, 547, 587, 787, 827, 907, 947, 1187, 1307, 1427, 1627, 1667, 1747, 1787, 1867, 1907, 1987, 2027, 2267, 2347, 2467, 2707, 3067, 3187, 3307, 3347, 3467, 3547, 3907, 3947, 4027, 4507, 4547, 4787, 4987, 5107, 5...
[ "nonn", "easy" ]
A387009
[ 1, 7, 56, 470, 4048, 35443, 313912, 2804012, 25211936, 227881004, 2068564064, 18844224462, 172186125456, 1577401391626, 14483100716176, 133240186921816, 1227901991526976, 11333497984085620, 104752914242685860, 969417048912326000, 8981452266787225000 ]
[ "nonn", "changed" ]
A013712
[ 7, 343, 16807, 823543, 40353607, 1977326743, 96889010407, 4747561509943, 232630513987207, 11398895185373144, 558545864083284030, 27368747340080914000, 1.341068619663965e+21, 6.571236236353428e+22, 3.21990575581318e+24, 1.577753820348458e+26 ]
[ "nonn", "easy" ]
A323654
[ 1, 0, 1, 1, 3, 3, 8, 9, 20, 26, 50, 69, 125, 177, 301, 440, 717, 1055, 1675, 2471, 3835, 5660, 8627, 12697, 19095, 27978, 41581, 60650, 89244, 129490, 188925, 272676, 394809, 566882, 815191, 1164510, 1664295, 2365698, 3361844, 4756030, ...
[ "nonn" ]
A185219
[ 0, 0, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 3, 2, 4, 3, 5, 4, 6, 5, 7, 7, 9, 9, 12, 12, 15, 16, 19, 20, 25, 26, 31, 34, 40, 43, 51, 55, 64, 71, 81, 89, 103, 113, 129, 143, 162, 179, 204, 225, 25...
[ "nonn", "hard" ]
A205230
[ 1187, 27157, 640652, 12273323, 221519116, 3408343704, 48815088704, 628179958745, 7601482985625, 85461685481592, 913975093055739, 9268873184287274, 90266141973458350, 844362225976352500 ]
[ "nonn" ]
A181465
[ 70, 141, 143, 214, 283, 285, 356, 425, 496, 569, 638, 709, 780, 782, 851, 853, 924, 993, 1135, 1208, 1277, 1279, 1561, 1563, 1703, 1847, 2058, 2129, 2131, 2344, 2413, 2626, 2699, 2839, 2841, 3054, 3265, 3267, 3336, 3338, 3409, 3478, ...
[ "fini", "full", "nonn" ]
A297129
[ 4, 8, 9, 12, 13, 14, 17, 18, 19, 33, 34, 35, 36, 38, 39, 49, 50, 51, 52, 54, 55, 56, 57, 59, 68, 70, 71, 72, 73, 75, 76, 77, 78, 132, 134, 135, 136, 137, 139, 140, 141, 142, 145, 146, 147, 152, 153, 155, 156, 157, 15...
[ "nonn", "easy", "base" ]
A199895
[ 1, 11, 51, 351, 2031, 13363, 82555, 536967, 3409609, 22163661, 142744843, 930121865, 6040974735, 39482258363, 257848379869, 1690142722447, 11081263427471, 72823380368573, 478876538926483, 3154101346620987 ]
[ "nonn" ]
A329376
[ 1, 1, 1, 2, 1, 1, 1, 1, 3, 1, 1, 2, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 1, 1, 5, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 6, 1, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 7, 5, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 3, 1...
[ "nonn", "easy", "mult" ]
A274675
[ 23, 71, 79, 113, 127, 137, 151, 191, 193, 233, 239, 263, 281, 337, 359, 401, 431, 449, 457, 463, 487, 569, 599, 617, 631, 641, 673, 743, 751, 809, 823, 863, 911, 919, 953, 967, 977, 991, 1009, 1031, 1033, 1087, 1103, 1129, 1201,...
[ "nonn", "easy" ]
A226949
[ 0, 1, 1, 2, 0, 4, 1, 0, 2, 2, 0, 4, 0, 1, 4, 2, 1, 6, 1, 3, 2, 2, 1, 5, 2, 1, 3, 1, 2, 11, 0, 1, 4, 2, 2, 6, 0, 2, 4, 3, 1, 9, 2, 3, 4, 3, 1, 7, 1, 4, 5, 5, 0, 8, 4, 1, 3, 3, 1, 15, 0, 3, 4, ...
[ "nonn" ]
A370146
[ 1, -1, 3, 0, 0, 0, -9, 0, 27, 0, 0, 0, -324, 0, 1215, 0, 0, 0, -18711, 0, 75816, 0, 0, 0, -1301265, 0, 5484996, 0, 0, 0, -100048689, 0, 431943435, 0, 0, 0, -8192222064, 0, 35942240565, 0, 0, 0, -700434986472, 0, 3108770417700, ...
[ "sign" ]
A336932
[ 0, 2, 1, 0, 3, 3, 2, 3, 0, 5, 1, 1, 1, 4, 4, 0, 2, 2, 3, 3, 3, 3, 1, 4, 0, 3, 2, 2, 5, 6, 1, 2, 2, 4, 5, 0, 1, 5, 2, 6, 2, 5, 4, 1, 3, 3, 1, 1, 0, 2, 3, 1, 2, 4, 4, 5, 4, 7, 1, 4, 2, 3, 2, 0...
[ "nonn" ]
A075052
[ 1, 3, 4, 1, 7, 9, 2, 9, 13, 15, 17, 19, 21, 4, 19, 25, 27, 20, 9, 31, 33, 35, 19, 18, 39, 41, 43, 28, 17, 47, 49, 51, 53, 55, 57, 59, 61, 39, 24, 65, 67, 69, 71, 35, 38, 75, 77, 79, 81, 47, 36, 85, 87, 89, 91...
[ "nonn" ]
A149412
[ 1, 1, 4, 12, 52, 200, 906, 3835, 17835, 79215, 374381, 1710234, 8170299, 38011835, 182943410, 862048941, 4171224246, 19838535950, 96382566615, 461629848142, 2249821353330, 10834620431069, 52936934322254, 256041710688572, 1253562592466569, 6084551109301534, 2984038...
[ "nonn", "walk" ]
A324066
[ 0, 0, 0, 0, 0, 16, 120, 720, 4830, 31360, 211680, 1555200, 11880000, 95293440, 815443200, 7687680000, 60432372000, 530552422400, 4945330790400, 51912327168000, 496766020608000, 5425624055808000, 61093281300480000, 781258429366272000, 8157685988035584000 ]
[ "nonn" ]
A164099
[ 1, 2, 6, 12, 33, 83, 273, 937, 3983, 18871, 103697, 628245, 4161652, 29372754, 218035754 ]
[ "nonn" ]
A207997
[ 1, 1, 1, 2, 3, 2, 4, 9, 9, 4, 8, 27, 41, 27, 8, 16, 81, 187, 187, 81, 16, 32, 243, 853, 1302, 853, 243, 32, 64, 729, 3891, 9075, 9075, 3891, 729, 64, 128, 2187, 17749, 63267, 96831, 63267, 17749, 2187, 128, 256, 6561, 8096...
[ "nonn", "tabl" ]
A304612
[ 37, 112, 262, 562, 1162, 2362, 4762, 9562, 19162, 38362, 76762, 153562, 307162, 614362, 1228762, 2457562, 4915162, 9830362, 19660762, 39321562, 78643162, 157286362, 314572762, 629145562, 1258291162, 2516582362, 5033164762, 10066329562, 20132659162, 402653183...
[ "nonn", "easy" ]
A278709
[ 4, 11, 19, 27, 35, 43, 51, 63, 77, 91, 107 ]
[ "nonn", "hard", "more", "nice" ]
A135643
[ 111, 123, 135, 147, 159, 210, 222, 234, 246, 258, 321, 333, 345, 357, 369, 420, 432, 444, 456, 468, 531, 543, 555, 567, 579, 630, 642, 654, 666, 678, 741, 753, 765, 777, 789, 840, 852, 864, 876, 888, 951, 963, 975, 987, 999, 1...
[ "nonn", "base" ]
A218163
[ 11, 11, 24, 20, 2, 12, 43, 103, 17, 13, 101, 15, 6, 99, 56, 297, 56, 573, 48, 31, 109, 77, 241, 67, 329, 267, 252, 27, 14, 330, 176, 151, 444, 948, 805, 33, 836, 123, 173, 437, 13, 136, 217, 392, 503, 349, 88, 185, 563, ...
[ "nonn" ]
A145090
[ 1, 1, 3, 9, 34, 131, 542, 2297, 10043, 44722, 202669, 930527, 4321859, 20264186, 95802300, 456152409, 2185541010, 10529301243, 50976432986, 247881491762, 1210135732693, 5928928117319, 29142693939368, 143671971795711 ]
[ "nonn" ]
A070499
[ 0, 1, 8, 27, 27, 14, 31, 10, 31, 26, 1, 36, 26, 14, 6, 8, 26, 29, 23, 14, 8, 11, 29, 31, 23, 11, 1, 36, 11, 6, 27, 6, 23, 10, 10, 29, 36, 0, 1, 8, 27, 27, 14, 31, 10, 31, 26, 1, 36, 26, 14, 6, 8, 26, 29, 23...
[ "nonn", "easy" ]
A108483
[ 1, 1, 0, 0, 0, -1, 0, 1, 1, 0, -1, -1, -1, 0, 2, 2, 0, -1, -2, -2, 0, 3, 3, 0, -2, -3, -3, 0, 5, 5, 1, -3, -5, -5, 0, 7, 7, 1, -5, -8, -7, 1, 11, 12, 2, -7, -12, -11, 1, 15, 16, 3, -11, -18, -15, 2, 23, ...
[ "sign" ]
A243188
[ 0, 1, 4, 9, 10, 16, 21, 25, 34, 36, 40, 49, 61, 64, 66, 81, 84, 85, 90, 100, 106, 109, 121, 129, 136, 144, 154, 160, 165, 169, 181, 189, 196, 201, 210, 225, 226, 229, 241, 244, 250, 256, 264, 265, 274, 289, 301, 306, 309...
[ "nonn" ]
A303218
[ 2, 21, 3, 610, 34, 5, 6765, 987, 55, 8, 832040, 46368, 2584, 144, 13, 102334155, 14930352, 196418, 10946, 377, 89, 190392490709135, 4807526976, 267914296, 317811, 3524578, 4181, 233, 1548008755920, 37889062373143900, 86267571272, 701408733, 2178309, ...
[ "nonn", "tabl" ]
A281586
[ 0, 1, 2, 3, -4, -15, -54, 133, 792, 4293, -15130, -123849, -895212, 4101799, 42732522, 386103915, -2177360656, -27544520691, -298649804706, 1999963458217, 29765143177020, 376514568163377, -2919514870785766, -49968285360277440, -722370834074696000, 636511768655034000...
[ "sign" ]
A054200
[ 1, 1, 2, 2, 3, 6, 9, 16, 29, 51, 93, 172, 315, 585, 1094, 2048, 3855, 7285, 13797, 26214, 49938, 95325, 182361, 349536, 671088, 1290555, 2485532, 4793490, 9256395, 17895730, 34636833, 67108864, 130150586, 252645135, 490853403 ]
[ "nonn" ]
A308641
[ 1, 1, 2, 2, 2, 3, 2, 3, 2, 2, 3, 1, 3, 2, 2, 4, 3, 6, 2, 3, 4, 1, 5, 3, 4, 4, 4, 8, 3, 5, 6, 5, 4, 3, 4, 2, 4, 6, 5, 4, 5, 6, 5, 4, 5, 4, 3, 4, 5, 1, 5, 6, 6, 4, 2, 7, 4, 5, 4, 4, 4, 5, 6, 3...
[ "nonn" ]
A194086
[ 1, 1, 1, 2, 1, 1, 3, 1, 1, 19, 41, 1, 7, 1, 281, 11, 1, 1, 3, 1, 2161, 29, 43, 461, 47, 101, 90481, 19, 14503, 19489, 3, 1, 4481, 199, 67, 29, 7, 1, 29134601, 79, 1601, 1, 3, 144481, 263, 11, 4969, 1, 769, 599786069, ...
[ "nonn", "easy" ]
A132274
[ 1, 1, 3, 6, 10, 19, 27, 41, 51, 66, 78, 101, 119, 145, 167, 197, 219, 247, 272, 306, 335, 371, 403, 443, 477, 521, 559, 609, 647, 693, 737, 789, 834, 886, 940, 996, 1055, 1118, 1176, 1243, 1306, 1385, 1450, 1523, 1596, 1676, ...
[ "nonn" ]
A031311
[ 8, 7, 6, 5, 4, 3, 2, 1, 11, 8, 166, 147, 127, 107, 87, 67, 47, 27, 150, 148, 7, 144, 125, 105, 85, 65, 45, 25, 130, 128, 126, 6, 122, 103, 83, 63, 43, 23, 110, 108, 106, 104, 5, 100, 81, 61, 41, 21, 90, 88, 86, 84,...
[ "nonn" ]
A274114
[ 1, 1, 1, 2, 4, 8, 17, 37, 81, 180, 405, 917, 2090, 4795, 11054, 25589, 59475, 138712, 324483, 761163, 1790028, 4219139, 9965328, 23582735, 55906518, 132751359, 315700152, 751837207, 1792853416, 4280568845, 10232005939, 24484563844, 58650123942, 14062...
[ "nonn", "walk" ]
A062126
[ 8, 114, 667, 2504, 7191, 17266, 36482, 70050, 124882, 209834, 335949, 516700, 768233, 1109610, 1563052, 2154182, 2912268, 3870466, 5066063, 6540720, 8340715, 10517186, 13126374, 16229866, 19894838, 24194298, 29207329 ]
[ "easy", "nonn" ]