id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A335231
[ 3, 4, 5, 6, 10, 13, 14, 15, 16, 17, 23, 24, 30, 31, 41, 47, 52, 55, 68, 71, 79, 95, 103, 119, 127, 143, 151, 167, 171, 175, 179, 187, 191, 195, 199, 203, 211, 215, 223, 227, 247, 271, 275, 291, 295, 311, 327, 335, 367, ...
[ "nonn" ]
A062752
[ 1, 15, 497, 22031, 1124849, 62379535, 3651676657, 222085764623, 13895337519601, 888654458770959, 57831897893972460, 3817410543738148400, 254970980461934280000, 1.7200148833928766e+22 ]
[ "nonn", "easy" ]
A362601
[ 1, 2, 5, 8, 12, 16, 23, 28, 33, 44, 49, 56, 70, 78, 85, 104, 111, 120, 141, 152, 161, 188, 197, 208, 237, 250, 261, 296, 307, 320, 357, 372, 385, 428, 441, 456, 501, 518, 533, 584 ]
[ "nonn", "more" ]
A064936
[ 2, 3, 5, 181, 40087, 251737, 335276334037181, 115423110870118060, 115423110870118560 ]
[ "nonn", "more" ]
A222355
[ 1, 1, 5, 24, 27, 176, 404, 2180, 3751, 21261, 44985, 238441, 483280, 2549426, 5537716, 28412352, 62022509, 314794248, 706911054, 3539578743, 8030595379, 39896971556, 91762984752, 452730150747, 1049361132758, 5153972338487, 12033114257303 ]
[ "nonn" ]
A175905
[ 5, 29, 2045, 40133, 971837, 5063357, 7354397, 16554917, 17786525, 42244637, 52717277, 79704029, 84896957, 153424637, 262984997, 288644957, 328721213, 350252957, 353294757, 393411197, 498253253, 613578149, 634102757, 876046277 ]
[ "nonn" ]
A082053
[ 1, 3, 1, 7, 6, 9, 1, 15, 10, 18, 1, 25, 14, 17, 6, 31, 18, 36, 1, 42, 22, 25, 1, 57, 31, 42, 10, 49, 30, 54, 1, 63, 34, 54, 6, 88, 38, 41, 14, 90, 42, 86, 1, 73, 60, 49, 1, 121, 50, 93, 18, 98, 54, 90, 6, 1...
[ "nonn", "easy" ]
A207046
[ 1416, 1182, 1272, 2244, 3408, 4836, 9144, 13950, 19752, 36912, 55944, 79032, 147648, 223776, 316128, 590592, 895104, 1264512, 2362368, 3580416, 5058048, 9449472, 14321664, 20232192, 37797888, 57286656, 80928768, 151191552, 229146624 ]
[ "nonn" ]
A106024
[ 104597, 648007, 855467, 896647, 1230337, 2307407, 2629547, 2884787, 4116823, 5526133, 6509143, 10446817, 11745017, 14962517, 16421297, 16632997, 20242127, 21919517, 22687823, 23076623, 26731807, 26743237, 26881193, 27504187 ]
[ "nonn" ]
A008710
[ 10, 11, 12, 13, 14, 15, 16, 21, 23, 31, 111, 1101, 1111111111111 ]
[ "fini", "nonn", "base", "full" ]
A324714
[ 0, 0, 1, 7, 3, 2, 7, 8, 11, 7, 15, 3, 31, 4, 26, 24, 63, 11, 127, 4, 51, 30, 255, 0, 19, 10, 28, 23, 511, 40, 1023, 40, 26, 14, 58, 52, 2047, 124, 204, 16, 4095, 48, 8191, 17, 33, 478, 16383, 8, 35, 17, 64, 21, 3...
[ "nonn" ]
A128186
[ 1, 1, 1, 2, 0, 1, 1, 2, 0, 1, 2, 0, 1, 0, 1, 2, 2, 1, 1, 0, 1, 2, 0, 1, 0, 1, 0, 1, 1, 3, 0, 2, 0, 1, 0, 1, 3, 0, 2, 0, 1, 0, 1, 0, 1, 2, 2, 1, 1, 1, 1, 0, 1, 0, 1 ]
[ "nonn", "tabl" ]
A195898
[ 1, 14, 70993724 ]
[ "nonn", "more", "bref" ]
A283603
[ 1, 3, 5, 11, 21, 59, 69, 155, 261, 795, 1285, 2651, 5125, 11547, 20485, 62555, 81925, 251163, 332805, 997467, 1332229, 3991835, 5313541, 15935579, 21255173, 63813915, 84935685, 255150171, 340005893, 1021147419, 1360020485, 4084566107, 5456794629, 163...
[ "nonn", "easy" ]
A153706
[ 1, 2, 11, 11, 964, 34015, 156075, 952945, 170942, 247768, 397506 ]
[ "nonn", "more" ]
A073883
[ 1, 3, 2, 6, 13, 5, 19, 7, 43, 11, 33, 61, 17, 45, 79, 23, 125, 29, 67, 31, 157, 37, 129, 41, 91, 147, 47, 215, 53, 233, 59, 123, 259, 203, 71, 143, 73, 301, 235, 83, 329, 89, 433, 97, 277, 101, 195, 103, 299, 107, 20...
[ "nonn" ]
A182586
[ 0, 2, 6, 8, 7, 3, 5, 4, 14, 16, 19, 21, 20, 9, 25, 10, 29, 31, 11, 13, 12, 33, 37, 40, 15, 41, 45, 47, 17, 50, 18, 49, 22, 55, 58, 60, 23, 63, 61, 24, 26, 69, 71, 70, 27, 76, 28, 77, 32, 30, 82, 84, 87, 89, 3...
[ "nonn" ]
A211492
[ 29, 65, 139, 287, 593, 1189, 2397, 4755, 9475, 18743, 37193, 73609, 145989, 289407, 574531, 1141067, 2268401, 4512781, 8983437, 17896131, 35666275, 71126615, 141881945, 283168249, 565251477, 1128785439, 2254414051, 4503880043 ]
[ "nonn" ]
A183181
[ 4, 5, 8, 11, 1244, 1685, 2009, 14657, 15118, 20332, 50830, 75062 ]
[ "nonn", "base" ]
A077030
[ 122, 127, 128, 142, 5233 ]
[ "nonn", "more", "hard" ]
A090137
[ 0, 0, 1, 1, 11, 13, 19, 1, 247, 251, 1013, 509, 1361, 1363, 16369, 2047, 65519, 851, 233, 14563, 209711, 29959, 46091, 1048573, 5592397, 5592401, 67108837, 1342177, 20648879, 268435441, 357913931, 22369621, 4294967263, 4294967279 ]
[ "nonn", "frac" ]
A054701
[ 3, 199, 251, 20809, 18839, 12829, 158867, 156733, 74453, 83477, 1736281, 1397609, 17702303, 10531373, 642427, 58880711, 120520087, 5321191, 304115129, 31824769, 5412049, 125954987, 188966023, 55410683, 162282233, 958613011, 400948369, 373978313, 3298545589, ...
[ "nonn" ]
A169521
[ 1, 28, 756, 20412, 551124, 14880348, 401769396, 10847773692, 292889889684, 7908027021468, 213516729579636, 5764951698650172, 155653695863554660, 4202649788315975000, 113471544284531340000, 3.063731695682346e+21 ]
[ "nonn" ]
A261382
[ 2, 2510, 15, 30, 5, 510, 730, 440, 195, 6230, 2040, 2760, 20, 1010, 12570, 31340, 1625, 1650, 725, 2480, 2160, 520, 1055, 60, 5, 20, 1260, 25800, 6185, 6240, 10, 1180, 12600, 7500, 5330, 390, 325, 2880, 11655, 32670, 5850, 43110, 32...
[ "nonn" ]
A358922
[ 5, 13, 137, 353, 877, 5171, 6337, 9397, 11197, 16631, 20011, 31247, 39191, 61261, 110581, 114067, 178537, 182981, 186601, 216317, 251917, 266797, 273349, 296477, 369791, 372707, 427681, 431567, 580787, 889337, 963331, 1009193, 1244053, 1501847, 193...
[ "nonn" ]
A101273
[ 171, 181, 272, 282, 1531, 1631, 2532, 2632, 3151, 3161, 3252, 3262, 11711, 11811, 12712, 12812, 14171, 14181, 14271, 14272, 15171, 15172, 16171, 16181, 17141, 17161, 17162, 17261, 17331, 17910, 18141, 18161, 18331, 18910, 21721, 21821, 22722, ...
[ "nonn", "base" ]
A091331
[ 123, 456, 789, 101, 112, 131, 415, 161, 718, 192, 21, 222, 324, 252, 627, 282, 930, 313, 233, 343, 536, 373, 839, 404, 142, 434, 445, 464, 748, 495, 51, 525, 354, 555, 657, 585, 960, 616, 263, 646, 566, 676, 869, 707, 172, 737...
[ "base", "easy", "nonn" ]
A205775
[ 1, 1, 3, 8, 26, 79, 276, 936, 3376, 12259, 45648, 171739, 655664, 2524835, 9813259, 38410167, 151332137, 599541153, 2387199083, 9547195445, 38335338712, 154484001619, 624579964260, 2532713370789, 10298393401623, 41979975505800, 171522040764060 ]
[ "nonn" ]
A278220
[ 1, 2, 4, 2, 8, 4, 16, 2, 6, 8, 32, 4, 64, 16, 12, 2, 128, 6, 256, 8, 24, 32, 512, 4, 12, 64, 6, 16, 1024, 12, 2048, 2, 48, 128, 36, 6, 4096, 256, 96, 8, 8192, 24, 16384, 32, 12, 512, 32768, 4, 24, 12, 192, 64, 65...
[ "nonn" ]
A328947
[ 0, 1001, 10010, 10101, 11011, 100100, 101010, 101101, 110110, 111111, 1000111, 1001000, 1010100, 1011010, 1011101, 1100001, 1101100, 1110011, 1111110, 10000011, 10001110, 10010000, 10011001, 10100111, 10101000, 10110100, 10111010, 10111101, 11000010, 1100010...
[ "nonn", "base" ]
A229208
[ 1, 2, 9, 55, 758, 16685, 29224, 84293, 87018, 98122 ]
[ "nonn", "more" ]
A298886
[ 5, 49, 34, 141, 243, 516, 814, 1646, 3312, 6565, 13040, 25941, 51679, 103895, 205265, 411011, 821599, 1643914, 3279755, 6573928, 13136700, 26293574, 52604464, 105288984, 210671989, 421821199, 844171966, 1689881070, 3382803573 ]
[ "nonn" ]
A012688
[ 1, -4, 0, 576, 8960, -2566144, -79073280, 51695271936, 3314973409280, -3424245425373184, -358564361388687360, 553778978731900000000, 8.678745999061318e+22, -1.864506105045206e+26 ]
[ "sign" ]
A031222
[ 2, 10, 15, 17, 19, 20, 21, 23, 30, 40, 53, 68, 76, 79, 82, 83, 85, 88, 98, 113, 120, 123, 126, 128, 129, 132, 135, 138, 141, 143, 144, 147, 150, 151, 153, 154, 156, 157, 158, 159, 160, 162, 163, 165, 168, 171, 173, 174, ...
[ "nonn" ]
A070418
[ 1, 3, 14, 15, 22, 28, 44, 46, 50, 56, 68, 70, 78, 88, 92, 94, 110, 112, 118, 166, 174, 176, 184, 188, 198, 214, 224, 228, 230, 234, 236, 255, 260, 294, 306, 318, 332, 334, 342, 352, 358, 368, 376, 414, 428, 448, 454, 462, ...
[ "easy", "nonn" ]
A175752
[ 3600, 7056, 8100, 15876, 17424, 19600, 20736, 22500, 24336, 39204, 41616, 48400, 51984, 54756, 67600, 76176, 86436, 93636, 94864, 99225, 104976, 115600, 116964, 121104, 122500, 132496, 138384, 144400, 147456, 160000, 171396, 197136 ]
[ "nonn" ]
A266536
[ 0, 1, 2, 3, 6, 7, 10, 13, 16, 21, 24, 29, 36, 39, 42, 45, 50, 57, 62, 71, 80, 91, 102, 111, 124, 137, 144, 151, 158, 167, 178, 189, 206, 223, 242, 261, 276, 293, 310, 327, 344, 359, 368, 385, 402, 423, 448, 467, 486, 5...
[ "nonn" ]
A280355
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 132, 312, 4112, 11133, 11313, 11331, 13113, 13131, 13311, 22112, 31113, 31131, 31311, 33111, 111216, 111612, 112116, 116112, 121116, 161112, 211116, 611112, 1111712, 11111232, 11112132, 11112312, 11113212, 11118112, ...
[ "nonn", "base", "easy" ]
A361066
[ 1, 1, 9, 148, 3673, 123276, 5234599, 269262022, 16279709793, 1131627199816, 88926737901031, 7796168316687906, 754414052156289300, 79872584117422210000, 9.184299004593619e+21, 1.1398225582628291e+24, 1.5185707704717382e+26 ]
[ "nonn" ]
A028971
[ 1, 0, 0, 6, 6, 0, 0, 6, 6, 0, 0, 12, 12, 0, 0, 2, 18, 0, 0, 24, 0, 0, 0, 6, 12, 0, 0, 24, 24, 0, 0, 12, 18, 0, 0, 6, 18, 0, 0, 12, 6, 0, 0, 42, 24, 0, 0, 6, 24, 0, 0, 36, 24, 0, 0, 0, 12, 0, 0, 24, ...
[ "nonn" ]
A039236
[ 0, 1, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 22, 23, 33, 36, 37, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 63, 64, 65, 66, 67, 68, 70, 71, 72, 73, 75, ...
[ "nonn", "base", "easy" ]
A316872
[ 8, 65, 425, 2931, 19363, 129974, 871345, 5848852, 39278049, 263713497, 1770482001, 11887215402, 79812178186, 535861305908, 3597799009537, 24155860662607, 162183882073432, 1088911875204984, 7311018935280645, 49086615774849384 ]
[ "nonn" ]
A343151
[ 1, 3, 4, 7, 8, 11, 19, 23, 25, 27, 36, 43, 47, 50, 64, 71, 107, 131, 163, 167, 179, 211, 223, 225, 242, 243, 251, 271, 307, 343, 359, 419, 431, 439, 443, 467, 503, 571, 691, 751, 800, 811, 827, 839, 863, 900, 907, 947, 9...
[ "nonn" ]
A303627
[ 16, 6, 616, 1870, 37910, 350410, 5249045, 70522741, 1042683911, 15412143256, 231857391297, 3507294376595, 53265758197769, 810914386664759, 12360167854003888, 188554666107041760, 2877613349788303000 ]
[ "nonn" ]
A174186
[ 1, 1, 1, 1, 6, 1, 1, 30, 30, 1, 1, 240, 1200, 240, 1, 1, 1560, 62400, 62400, 1560, 1, 1, 10920, 2839200, 22713600, 2839200, 10920, 1, 1, 74256, 135145920, 7027587840, 7027587840, 135145920, 74256, 1, 1, 510510, 6318071760, 2299778120640 ]
[ "nonn", "tabl", "uned" ]
A350766
[ 1, 11, 21, 23, 44, 76, 21, 79, 1, 8, 9, 71, 8, 97, 501, 895, 6931, 6287, 81231, 81578, 908261, 938989, 527481, 746641, 2214721, 2631692, 3146484, 6718775, 9525689, 46444261, 5996955, 61214425, 8311276, 10752596, 27836091, 78688583 ]
[ "nonn", "base", "easy" ]
A148767
[ 1, 1, 3, 7, 29, 93, 365, 1229, 5293, 19663, 83229, 311889, 1387721, 5469539, 23973181, 94601473, 428312559, 1746245251, 7805363683, 31773614049, 145453492511, 606234306813, 2744169647749, 11406695266495, 52617379377691, 222752070436123, 1017257444499731, 4292728...
[ "nonn", "walk" ]
A103363
[ 4, 25, 14, 1229, 9592, 39249, 664579, 5761455, 50847534, 455052511 ]
[ "nonn", "frac", "hard", "more" ]
A236709
[ 76404, 1707838, 42032622, 1099360056, 29705776060, 800348545256, 21427121287833, 575347045288652, 15549091403024716, 418855402748242000, 11267605196552727000, 303029158940430000000, 8.173925706085759e+21 ]
[ "nonn" ]
A003355
[ 10, 41, 72, 103, 134, 165, 196, 227, 252, 258, 283, 289, 314, 320, 345, 376, 407, 438, 469, 494, 500, 525, 531, 556, 587, 618, 649, 680, 711, 736, 742, 767, 798, 829, 860, 891, 922, 953, 978, 1009, 1033, 1040, 1064, 1071, 1095, ...
[ "nonn", "easy" ]
A134608
[ 256, 588, 693, 3840, 6561, 14157, 17787, 141960, 178360, 313600, 337365, 350000, 387072, 390625, 407442, 432000, 466560, 531674, 535815, 541310, 664909, 697851, 1044582, 1262056, 1264640, 1299272, 1374327, 1547570, 1608575, 1660360 ]
[ "nonn" ]
A145353
[ 1, 2, 3, 5, 6, 7, 8, 10, 12, 13, 14, 16, 17, 18, 19, 22, 23, 25, 26, 28, 29, 30, 31, 33, 35, 36, 38, 40, 41, 42, 43, 45, 46, 47, 48, 52, 53, 54, 55, 57, 58, 59, 60, 62, 64, 65, 66, 69, 71, 73, 74, 76, 77, 79, ...
[ "nonn" ]
A259655
[ 1, 1, 3, 1, 4, 1, 5, 2, 5, 2, 5, 3, 7, 1, 7, 2, 9, 3, 7, 2, 6, 4, 11, 3, 8, 3, 10, 3, 8, 4, 9, 3, 14, 2, 10, 2, 15, 6, 7, 5, 7, 3, 14, 5, 14, 3, 16, 5, 8, 4, 13, 5, 13, 3, 12, 4, 18, 5, 14, 4, 13,...
[ "nonn" ]
A322856
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 19, 24, 30, 37, 45, 54, 64, 76, 91, 110, 135, 166, 204, 250, 305, 370, 447, 539, 650, 787, 956, 1164, 1419, 1730, 2107, 2562, 3110, 3770, 4569, 5540, 672...
[ "nonn" ]
A375089
[ 0, 0, 1, 1, 1, 1, 1, 2, 3, 2, 1, 10, 1, 2, 8, 4, 1, 9, 1, 11, 8, 2, 3, 55, 6, 2, 6, 11, 3, 49, 1, 8, 8, 2, 13, 133, 1, 6, 20, 46, 1, 49, 3, 27, 81, 4, 1, 260, 2, 38, 20, 11, 1, 106, 21, 78, 20, 4, 7, ...
[ "nonn" ]
A180853
[ 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7, 5, 4, 6, 9, 7...
[ "nonn", "easy" ]
A270093
[ 1, 6, 14, 34, 54, 86, 134, 190, 278, 334, 430, 514, 654, 782, 962, 1234, 1494, 1670, 1982, 2222, 2550, 2830, 3238, 3638, 4190, 4498, 5034, 5510, 6258, 6818, 7666, 8450, 9514, 10282, 11374, 12202, 13246, 14174, 15242, 16438, 17538, 186...
[ "nonn", "easy" ]
A159695
[ 7, 15, 32, 68, 144, 304, 640, 1344, 2816, 5888, 12288, 25600, 53248, 110592, 229376, 475136, 983040, 2031616, 4194304, 8650752, 17825792, 36700160, 75497472, 155189248, 318767104, 654311424, 1342177280, 2751463424, 5637144576 ]
[ "easy", "nonn" ]
A204718
[ 156, 1271, 9657, 67518, 457635, 2995945, 19292513, 122364692, 769496369, 4805715229, 29884389399, 185240266936, 1145815170519, 7076844213885, 43664352503529, 269220210036124, 1659131569336565, 10221401510913812 ]
[ "nonn" ]
A205482
[ 1, 1, 2, 2, 5, 5, 15, 15, 34, 46, 84, 96, 246, 282, 512, 696, 1421, 1713, 3436, 4084, 8227, 10821, 19128, 23258, 48474, 60943, 106780, 139313, 252748, 322577, 600660, 760872, 1365570, 1807979, 3064882, 3951491, 7358684, 9476993, 15962935, ...
[ "nonn" ]
A256071
[ 1, 1, 2, 2, 2, 3, 1, 4, 2, 2, 2, 1, 4, 2, 3, 3, 1, 3, 4, 3, 3, 1, 3, 2, 4, 3, 3, 1, 3, 4, 2, 4, 2, 3, 2, 3, 2, 3, 4, 3, 2, 3, 4, 5, 3, 4, 3, 2, 4, 3, 1, 3, 3, 5, 4, 3, 2, 3, 4, 5, 3, 2, 4, 4...
[ "nonn" ]
A015480
[ 0, 1, 8, 513, 262664, 1075872257, 35254182380040, 9241672386909078000, 1.9381191729586403e+25, 3.251624399846939e+32, 4.364256392568199e+40 ]
[ "nonn", "easy" ]
A165686
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 4, 5, 6, 8, 8, 11, 12, 14, 16, 19, 20, 24, 26, 29, 32, 37, 38, 44, 47, 51, 56, 62, 64, 72, 76, 82, 88, 96, 99, 109, 115, 122, 130, 140, 144, 157, 164, 173, 183, 195, ...
[ "nonn", "easy" ]
A117447
[ 1, 1, 2, 0, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 2, 0...
[ "nonn", "easy" ]
A190750
[ 2, 7, 11, 16, 21, 26, 32, 36, 41, 44, 50, 54, 60, 65, 69, 74, 79, 84, 90, 92, 98, 102, 108, 112, 118, 122, 127, 132, 136, 141, 146, 150, 156, 160, 166, 170, 175, 180, 184, 189, 194, 199, 203, 208, 214, 218, 224, 227, 232...
[ "nonn" ]
A236929
[ 1, 4, 4, 0, 4, 12, 16, 16, 4, 20, 44, 16, 16, 24, 32, 64, 4, 8, 52, 16, 44, 32, 48, 48, 16, 84, 56, 64, 32, 56, 176, 32, 4, 64, 72, 112, 52, 56, 80, 64, 44, 72, 128, 32, 48, 188, 96, 48, 16, 68, 244, 128, 56, 5...
[ "nonn" ]
A354458
[ 1, 1, 4, 19, 117, 864, 7459, 73749, 818960, 10078023 ]
[ "nonn", "more" ]
A355908
[ 0, 2, -2, 4, -6, 10, -14, 22, -32, 50, -74, 112, -168, 254, -380, 572, -858, 1288, -1932, 2900 ]
[ "sign", "more" ]
A183194
[ 29, 71, 71, 239, 239, 239, 13001, 50333, 50333, 374893, 1831913, 1831913, 3836171, 8467523, 8467523, 171374563, 2260865401, 2260865401, 2260865401, 2260865401, 2260865401, 1618263493747, 5212787222677, 5212787222677 ]
[ "base", "nonn", "more" ]
A200929
[ 7, 70, 3158, 1684241, 10179183172 ]
[ "nonn" ]
A160861
[ 11, 22, 33, 44, 55, 66, 77, 88, 99, 100, 111, 122, 133, 144, 155, 166, 177, 188, 199, 200, 212, 221, 224, 236, 242, 248, 263, 284, 300, 313, 326, 331, 339, 362, 393, 400, 414, 422, 428, 441, 482, 500, 515, 551, 600, 616, 623...
[ "nonn", "base", "easy" ]
A330631
[ 1, 1, 2, 2, 4, 2, 4, 3, 6, 3, 6, 5, 10, 3, 6, 7, 7, 14, 3, 6, 4, 8, 4, 8, 8, 16, 4, 8, 7, 14, 8, 16, 8, 16, 15, 30, 3, 6, 17, 9, 18, 5, 10, 9, 18, 5, 10, 4, 8, 19, 9, 18, 17, 34, 7, 14, 6, 12, 6, 12...
[ "nonn" ]
A104653
[ 0, 1, 4, 27, 270, 3645, 62370, 1295595, 31689630, 892387125, 28439784450, 1011998000475, 39773696712750, 1711186282730925, 79990996596761250, 4037168079574505000, 218797477268743130000, 1.2673229445076108e+22 ]
[ "easy", "nonn" ]
A047714
[ 3, 18, 33, 48, 83, 98, 113, 163, 178, 243, 258, 273, 288, 338, 353, 418, 513, 528, 593, 627, 642, 657, 707, 722, 768, 787, 882, 897, 962, 1137, 1251, 1266, 1298, 1313, 1328, 1331, 1378, 1393, 1458, 1506, 1553, 1568, 1633, 1808, ...
[ "nonn" ]
A114460
[ 8, 9, 11, 12, 13, 14, 14, 15, 16, 17, 18, 18, 19, 19, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 29, 30, 30, 31, 31, 32, 32, 32, 33, 33, 33, 34, 34, 34, 35, 35, 36, 36, 36, 37, ...
[ "nonn" ]
A390641
[ 10, 14, 20, 22, 26, 28, 35, 38, 40, 44, 52, 55, 58, 68, 74, 77, 82, 85, 88, 91, 92, 94, 95, 106, 112, 115, 119, 122, 124, 133, 148, 152, 155, 158, 161, 166, 172, 176, 184, 185, 187, 194, 203, 206, 208, 212, 214, 215, 217...
[ "nonn", "new" ]
A386314
[ 1, 5, 13, 17, 11, 7, 29, 19, 25, 37, 49, 53, 35, 23, 61, 65, 43, 77, 85, 101, 67, 89, 59, 113, 133, 149, 157, 173, 115, 181, 197, 131, 205, 209, 139, 185, 229, 241, 245, 163, 217, 269, 179, 119, 79, 277, 289, 301, 305, ...
[ "nonn" ]
A032621
[ 1, 11, 13, 17, 25, 31, 35, 43, 65, 71, 83, 95, 97, 101, 125, 127, 137, 151, 155, 157, 161, 163, 167, 187, 197, 203, 205, 211, 217, 221, 223, 227, 233, 235, 245, 251, 257, 263, 265, 271, 283, 317, 331, 335, 337, 341, 353, 3...
[ "nonn", "base" ]
A020765
[ 3, 5, 3, 5, 5, 3, 3, 9, 0, 5, 9, 3, 2, 7, 3, 7, 6, 2, 2, 0, 0, 4, 2, 2, 1, 8, 1, 0, 5, 2, 4, 2, 4, 5, 1, 9, 6, 4, 2, 4, 1, 7, 9, 6, 8, 8, 4, 4, 2, 3, 7, 0, 1, 8, 2, 9, 4, 1, 6, 9, 9, 3, 4, 4...
[ "nonn", "cons" ]
A253487
[ 2, 16, 90, 448, 2100, 9504, 42042, 183040, 787644, 3359200, 14226212, 59907456, 251100200, 1048380480, 4362680250, 18103127040, 74934688620, 309509877600, 1275964023180, 5251296336000, 21579247511640, 88555121603520, 362957071241700, 1485969577717248 ]
[ "nonn", "easy" ]
A055745
[ 1, 2, 6, 10, 22, 30, 42, 58, 70, 78, 102, 130, 190, 210, 330, 462 ]
[ "nonn", "fini", "nice" ]
A240957
[ 1, 3, 20, 234, 3944, 86400, 2324160, 74062800, 2726970624, 113893395840, 5319595814400, 274730601277440, 15544557784673280, 956232958853652500, 63540675378122340000, 4.535620918350762e+21, 3.461272279625392e+23, 2.8120835253815297e+25, 2.4233094424151447e+27 ]
[ "nonn" ]
A279760
[ 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0...
[ "nonn" ]
A161942
[ 1, 3, 1, 7, 3, 3, 1, 15, 13, 9, 3, 7, 7, 3, 3, 31, 9, 39, 5, 21, 1, 9, 3, 15, 31, 21, 5, 7, 15, 9, 1, 63, 3, 27, 3, 91, 19, 15, 7, 45, 21, 3, 11, 21, 39, 9, 3, 31, 57, 93, 9, 49, 27, 15, 9, 15, 5, 45, ...
[ "easy", "mult", "nonn" ]
A247436
[ 43, 84, 43, 84, 29, 15, 15, 42, 85, 42, 85, 28, 15, 14, 43, 84, 43, 84, 29, 15, 15, 42, 85, 42, 85, 28, 15, 14, 43, 84, 43, 84, 29, 15, 15, 42, 85, 42, 85, 28, 15, 14, 43, 84, 43, 84, 29, 15, 15, 42, 85, 42, 85, ...
[ "nonn", "easy" ]
A222466
[ 5, 6, 3, 1, 7, 8, 6, 1, 9, 8, 1, 1, 7, 1, 1, 3, 8, 5, 4, 2, 5, 7, 5, 2, 9, 0, 3, 7, 0, 3, 5, 6, 3, 5, 5, 3, 2, 7, 6, 0, 5, 2, 2, 5, 4, 8, 6, 4, 0, 4, 3, 4, 9, 2, 4, 1, 2, 9, 8, 4, 8, 2, 1, 9...
[ "nonn", "cons" ]
A206440
[ 1, 5, 11, 27, 43, 93, 131, 247, 352, 584, 808, 1306, 1735, 2643, 3568, 5160, 6835, 9721, 12672, 17564, 22832, 30818, 39743, 53027, 67594, 88740, 112752, 145944, 183979, 236059, 295370, 375208, 467363, 588007, 728437, 910339, 1121009, 1391083,...
[ "nonn" ]
A118998
[ 0, -1, -2, -3, -5, -9, -32, -56, -128, -320 ]
[ "sign", "more" ]
A337481
[ 0, 0, 1, 1, 5, 11, 25, 55, 117, 241, 493, 1001, 2019, 4061, 8149, 16331, 32705, 65461, 130981, 262037, 524161, 1048425, 2096975, 4194097, 8388365, 16776933, 33554103, 67108481, 134217285, 268434945, 536870321, 1073741145, 2147482869, 4294966401, 85...
[ "nonn" ]
A226719
[ 3, 17, 59, 101, 107, 521, 239, 569, 881, 1427, 1091, 1289, 1301, 3167, 2027, 2309, 8837, 2969, 3389, 3821, 4787, 13679, 23909, 27407, 10889, 7877, 14627, 16631, 21011, 13997, 17027, 20441, 12107, 26711, 36467, 36779, 38567, 32909, 27479, ...
[ "nonn" ]
A176750
[ 1, 4, 7, 29, 113, 506, 2321, 11112, 54429, 272364, 1384701, 7135397, 37178543, 195556526, 1036967927, 5537451445, 29752654081, 160731437308, 872518135861, 4756932856431, 26035840213731, 143003903810742, 787983925181427 ]
[ "easy", "nonn" ]
A364159
[ 0, 1, 1, 2, 2, 3, 4, 5, 7, 9, 11, 15, 20, 23, 32, 40, 50, 61, 82, 95, 126, 149, 188, 228, 292, 337, 430, 510, 633, 748, 933, 1083, 1348, 1579, 1925, 2262, 2761, 3197, 3893, 4544, 5458, 6354, 7634, 8835, 10577, 12261, 14546, ...
[ "nonn" ]
A165209
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 17, 19, 22, 23, 26, 27, 29, 31, 33, 37, 39, 41, 43, 44, 46, 47, 53, 55, 59, 61, 62, 66, 67, 69, 71, 73, 77, 79, 81, 82, 83, 86, 88, 89, 93, 97, 99, 101, 103, 107, 109, 113, 12...
[ "nonn", "base" ]
A193239
[ 0, 0, 1, 0, 1, 0, -1, 0, 1, 0, 1, 6, 1, 6, 1, 0, 1, 0, 1, 4, -1, 0, -1, -1, 1, 4, -1, 0, -1, -1, 5, 0, 1, 0, 1, 6, 1, -1, 1, -1, 1, -1, 1, -1, -1, 0, 7, -1, 1, 6, 7, 0, 1, -1, 1, 2, 1, -1, 1, 2, 7...
[ "base", "sign" ]
A114596
[ 1, 0, 2, 1, 0, 5, 2, 2, 0, 14, 6, 4, 5, 0, 42, 18, 12, 10, 14, 0, 132, 57, 36, 30, 28, 42, 0, 429, 186, 114, 90, 84, 84, 132, 0, 1430, 622, 372, 285, 252, 252, 264, 429, 0, 4862, 2120, 1244, 930, 798, 756, 792, 858...
[ "nonn", "tabl" ]
A127362
[ 1, -2, 8, -24, 84, -272, 920, -3040, 10180, -33840, 112968, -376224, 1254696, -4181088, 13939248, -46459584, 154873860, -516229040, 1720795880, -5735921440, 19119861304, -63732624672, 212442552528, -708140901184, 2360471473384, -7868234639072 ]
[ "easy", "sign" ]
A007544
[ 4, 24, 36, 48, 48, 144, 32, 60, 192, 108, 144, 72, 240, 288, 192, 216, 84, 288, 360, 432, 576, 108, 96, 336, 432, 288, 480, 720, 384, 432, 108, 384, 504, 336, 576, 300, 864, 960, 540, 576, 120, 432, 576, 384, 672, 1728, 1152...
[ "nonn" ]
A287657
[ 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1...
[ "nonn", "easy" ]
A158306
[ 323, 647, 971, 1295, 1619, 1943, 2267, 2591, 2915, 3239, 3563, 3887, 4211, 4535, 4859, 5183, 5507, 5831, 6155, 6479, 6803, 7127, 7451, 7775, 8099, 8423, 8747, 9071, 9395, 9719, 10043, 10367, 10691, 11015, 11339, 11663, 11987, 12311, 12635, ...
[ "nonn", "easy" ]
A208201
[ 1, 2, 2, 5, 14, 5, 15, 178, 178, 15, 51, 2653, 10366, 2653, 51, 187, 41272, 639701, 639701, 41272, 187, 715, 648569, 39725054, 156617480, 39725054, 648569, 715, 2795, 10215440, 2468504665, 38372808893, 38372808893, 2468504665, 10215440, 2795 ]
[ "nonn", "tabl" ]