id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A202186
[ 4, 5, 7, 8, 10, 11, 14, 16, 21, 24, 29, 37, 40, 48, 50, 51, 65, 66, 68 ]
[ "nonn" ]
A348067
[ 2, 6, 26, 18, 202, 78, 122, 54, 338, 606, 2462, 234, 794, 366, 2626, 162, 1346, 1014, 502, 1818, 1586, 7386, 4546, 702, 20402, 2382, 4394, 1098, 8914, 7878, 43954, 486, 32006, 4038, 12322, 3042, 2962, 1506, 10322, 5454, 12178, 4758, ...
[ "nonn" ]
A346336
[ 9, 40, 71, 102, 133, 164, 195, 226, 251, 257, 282, 288, 313, 344, 375, 406, 437, 468, 493, 499, 524, 555, 586, 617, 648, 679, 710, 735, 766, 797, 828, 859, 890, 921, 977, 1008, 1032, 1039, 1063, 1070, 1094, 1101, 1125, 1132, 115...
[ "nonn" ]
A110484
[ 25, 49, 81, 121, 169, 289, 361, 441, 529, 625, 729, 841, 961, 1089, 1225, 1369, 1521, 1681, 1849, 2209, 2401, 2809, 3025, 3249, 3481, 3721, 3969, 4225, 4489, 5041, 5329, 5929, 6241, 6889, 7225, 7921, 8281, 8649, 9025, 9409, 10201, 106...
[ "nonn" ]
A321783
[ 1, 2, 2, 1, 3, 3, 2, 5, 5, 2, 4, 4, 1, 4, 4, 3, 8, 8, 3, 7, 7, 2, 8, 8, 5, 12, 12, 5, 9, 9, 2, 7, 7, 4, 9, 9, 4, 6, 6, 1, 5, 5, 4, 11, 11, 4, 10, 10, 3, 13, 13, 8, 19, 19, 8, 14, 14, 3, 12, 12, 7,...
[ "nonn", "tabf" ]
A313167
[ 1, 4, 9, 15, 18, 21, 27, 34, 37, 42, 46, 53, 58, 60, 63, 70, 76, 79, 85, 87, 96, 102, 101, 105, 113, 119, 119, 129, 128, 139, 145, 143, 146, 157, 162, 160, 171, 170, 182, 188, 184, 188, 200, 206, 201, 214, 210, 226, 231,...
[ "nonn" ]
A124442
[ 1, 1, 2, 3, 12, 5, 120, 35, 280, 63, 30240, 77, 665280, 1287, 16016, 19305, 518918400, 2431, 17643225600, 46189, 14780480, 1322685, 28158588057600, 96577, 4317650168832, 58503375, 475931456000, 75218625, 3497296636753920000, 215441, 202843204931727360000 ]
[ "nonn" ]
A367964
[ 0, 1, 2, 3, 4, 6, 6, 7, 9, 12, 10, 11, 13, 16, 20, 15, 16, 18, 21, 25, 30, 21, 22, 24, 27, 31, 36, 42, 28, 29, 31, 34, 38, 43, 49, 56, 36, 37, 39, 42, 46, 51, 57, 64, 72, 45, 46, 48, 51, 55, 60, 66, 73, 81, 9...
[ "nonn", "tabl" ]
A344592
[ 1, 1, 1, 3, 1, 5, 1, 1, 1, 7, 1, 125, 1, 11, 16807, 15, 1, 35, 1, 343, 161051, 13, 1, 25, 9317, 17, 1, 1331, 1, 2401, 1, 1, 371293, 19, 253333223, 42875, 1, 23, 1419857, 1, 1, 1, 1, 2197, 14641, 29, 1, 49, 371293, 6684...
[ "nonn" ]
A313478
[ 1, 5, 10, 14, 18, 22, 26, 30, 37, 44, 51, 54, 58, 60, 62, 66, 70, 79, 86, 93, 96, 102, 104, 106, 108, 110, 121, 128, 135, 136, 142, 146, 150, 152, 154, 165, 170, 177, 176, 182, 186, 190, 194, 198, 211, 216, 221, 216, 222...
[ "nonn" ]
A179616
[ 1, 2, 53, 4, 96, 2, 1, 6, 2, 2, 2, 6, 1, 4, 1, 49, 17, 2, 3, 2, 7, 2, 1, 1, 3, 1, 3, 2, 1, 2, 6, 11, 1, 8, 1, 1, 10, 1, 10, 2, 5, 1, 2, 1, 1, 4, 1, 3, 3, 2, 3, 5, 2, 1, 1, 1, 1, 1, 2, 4, 1, 3, ...
[ "nonn", "cofr" ]
A043782
[ 3, 5, 6, 7, 9, 12, 14, 17, 18, 22, 24, 25, 27, 36, 39, 41, 44, 53, 54, 67, 72, 76, 78, 79, 81, 108, 117, 120, 122, 125, 134, 161, 162, 202, 216, 229, 234, 238, 240, 241, 243, 324, 351, 360, 363, 365, 368, 377, 404, 485...
[ "nonn", "base" ]
A151198
[ 1, 3, 12, 53, 242, 1123, 5315, 25443, 122624, 594555, 2897359, 14171079, 69507304, 341784562, 1684170321, 8312757257, 41089063126, 203356188085, 1007520250738, 4996268566801, 24796418225814, 123152206270025, 612018222946856, 3043155109702677, 15138997708619128, 7534...
[ "nonn", "walk" ]
A238305
[ 2, 3, 3, 6, 4, 5, 14, 6, 5, 8, 27, 12, 6, 7, 12 ]
[ "nonn", "hard", "more", "tabl" ]
A374605
[ 1, 13, 621, 40864, 3116125, 258687513, 22695228864, 2069939892096, 194303918495709, 18648446389798224, 1821631879087498500, 180513102382789030000, 1.8101940249015915e+22, 1.8335727271774622e+24, 1.8732399556094087e+26, 1.9279943156312885e+28, 1.9972217167752752e+30 ]
[ "nonn", "easy" ]
A254963
[ 0, 7, 25, 54, 94, 145, 207, 280, 364, 459, 565, 682, 810, 949, 1099, 1260, 1432, 1615, 1809, 2014, 2230, 2457, 2695, 2944, 3204, 3475, 3757, 4050, 4354, 4669, 4995, 5332, 5680, 6039, 6409, 6790, 7182, 7585, 7999, 8424, 8860, 9307, 9...
[ "nonn", "easy" ]
A290615
[ 1, 2, 5, 14, 45, 164, 661, 2906, 13829, 70736, 386397, 2242118, 13759933, 88975628, 604202693, 4296191090, 31904681877, 246886692680, 1986631886029, 16592212576862, 143589971363981, 1285605080403332, 11891649654471284, 113491862722958480, 1116236691139398500 ]
[ "nonn" ]
A136474
[ 3, 19, 163, 1459, 17497, 52489, 87211, 135433, 139483, 1220347, 5419387, 6049243, 28934011, 86093443, 227862073, 272010961 ]
[ "more", "nonn" ]
A066922
[ 0, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 2, 2, 1, 2, 1, 2, 1, 1, 1, 3, 1, 1, 2, 2, 2, 2, 1, 2, 2, 2, 1, 3, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 2, 2, 2, 2, 2, 1, 1, 1, 2, 1, 1...
[ "nonn", "easy" ]
A110016
[ 5, 7, 11, 17, 19, 25, 29, 37, 43, 47, 53, 55, 61, 71, 73, 79, 89, 97, 101, 107, 109, 115, 127, 143, 155, 169, 173, 187, 191, 199, 215, 223, 235, 241, 251, 253, 263, 271, 281, 295, 317, 323, 341, 367, 377, 389, 395, 397, ...
[ "easy", "nonn" ]
A124582
[ 23, 31, 47, 53, 61, 73, 83, 89, 113, 131, 139, 151, 157, 167, 173, 181, 199, 211, 233, 241, 251, 257, 263, 271, 283, 293, 317, 331, 337, 353, 359, 367, 373, 383, 389, 401, 409, 421, 433, 443, 449, 467, 479, 491, 503, 509, 52...
[ "nonn" ]
A343251
[ 1, 2, 3, 4, 1, 3, 7, 8, 9, 2, 11, 4, 13, 7, 3, 16, 17, 9, 19, 4, 7, 11, 23, 8, 1, 13, 27, 7, 29, 3, 31, 32, 11, 17, 7, 9, 37, 19, 13, 8, 41, 7, 43, 11, 9, 23, 47, 16, 49, 2, 17, 13, 53, 27, 11, 8, 19, 2...
[ "nonn" ]
A016083
[ 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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, ...
[ "sign" ]
A386291
[ 4, 4, 12, 60, 420, 3612, 35112, 368940, 4092660, 47287812, 564244824, 6911705164, 86538400312, 1103802305800, 14305263976080, 187980058537740, 2500329726373140, 33615543407577780, 456277456430657400, 6246438368992478000, 86175353789650190000 ]
[ "nonn", "easy" ]
A385081
[ 1, 2, 3, 6, 20, 24, 15, 90, 40, 120, 210, 504, 420, 720, 105, 1260, 1120, 3360, 2688, 1260, 5040, 2520, 9072, 15120, 25920, 2240, 20160, 18144, 40320, 945, 18900, 25200, 75600, 120960, 56700, 226800, 50400, 172800, 151200, 72576, 362880...
[ "nonn", "tabf" ]
A003586
[ 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 64, 72, 81, 96, 108, 128, 144, 162, 192, 216, 243, 256, 288, 324, 384, 432, 486, 512, 576, 648, 729, 768, 864, 972, 1024, 1152, 1296, 1458, 1536, 1728, 1944, 2048, ...
[ "nonn", "easy", "nice" ]
A260722
[ 0, 0, -2, -2, -2, -2, -4, -2, -6, -4, 0, -2, -6, -4, -10, -6, -2, -2, 2, 4, 2, -2, -2, 2, 4, 4, -6, -2, -2, 8, 8, 6, 2, 10, 6, 8, -8, 0, 14, 10, 16, 12, 8, 10, 4, 4, 10, 16, 6, 16, 16, 14, 18, 22, 24, 32, ...
[ "sign" ]
A013055
[ 1, -4, 56, -1798, 107880, -10378106, 1464480244, -284901103638, 73088762562608, -23906588709686576, 9710588243080307000, -4.795485037260052e+21, 2.8295431917985523e+24 ]
[ "sign" ]
A198874
[ 1, 4, 3, 7, 5, 1, 3, 2, 6, 8, 4, 1, 3, 4, 2, 0, 3, 0, 4, 2, 5, 7, 2, 3, 4, 1, 4, 7, 0, 9, 5, 9, 2, 7, 5, 3, 7, 4, 2, 3, 8, 8, 0, 9, 3, 2, 4, 6, 4, 4, 9, 0, 6, 5, 7, 3, 7, 1, 7, 5, 5, 3, 6, 6...
[ "nonn", "cons" ]
A249228
[ 2772, 7736, 21648, 60744, 170928, 482388, 1365524, 3889132, 11085704, 31624832, 90291712, 257986472, 737641956, 2111829480, 6047886156, 17324092484, 49634779596, 142232471640, 407642504688, 1168643504468, 3350608310100 ]
[ "nonn" ]
A020828
[ 1, 1, 8, 6, 7, 8, 1, 6, 5, 8, 1, 9, 3, 8, 5, 3, 3, 2, 8, 2, 5, 8, 3, 2, 9, 5, 6, 4, 2, 5, 3, 9, 0, 6, 4, 8, 3, 3, 2, 5, 0, 7, 0, 7, 6, 0, 7, 8, 3, 2, 0, 4, 2, 2, 7, 2, 7, 7, 1, 5, 6, 4, 9, 7...
[ "nonn", "cons" ]
A200660
[ 0, 1, 8, 49, 284, 1658, 9974, 62375, 406832, 2769493, 19668054, 145559632, 1121153604, 8974604065, 74553168520, 641808575961, 5718014325296, 52653303354906, 500515404889978, 4905937052293759, 49530189989912310, 514541524981377900, 5494885265473193000 ]
[ "nonn" ]
A138362
[ 11, 47, 587, 911, 1307, 2927, 8111, 9227, 13007, 14411, 15887, 20747, 22511, 32411, 34607, 41627, 44111, 54767, 60527, 72911, 90011, 104987, 133967, 152111, 197147, 207947, 236207, 254027, 260111, 318107, 404507, 427727, 443567, 467867, 476111 ]
[ "nonn" ]
A327335
[ 0, 1, 4, 18, 216 ]
[ "nonn", "more" ]
A346048
[ 1, 1, 1, 1, 0, 1, 2, 3, 3, 3, 5, 9, 15, 19, 24, 35, 59, 95, 137, 191, 280, 445, 706, 1071, 1575, 2357, 3663, 5755, 8890, 13483, 20518, 31759, 49658, 77267, 119135, 183523, 284793, 444883, 694798, 1080865, 1679142, 2616399, 4092497, ...
[ "nonn" ]
A305148
[ 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 9, 12, 12, 17, 20, 22, 28, 35, 39, 48, 55, 65, 79, 90, 105, 121, 143, 166, 190, 219, 254, 290, 332, 382, 436, 493, 567, 637, 729, 824, 931, 1052, 1186, 1334, 1504, 1691, 1894, 2123, 2380, ...
[ "nonn" ]
A101417
[ 1, 0, 0, 1, 0, 1, 2, 1, 1, 3, 3, 3, 6, 5, 6, 10, 9, 12, 17, 17, 22, 28, 30, 37, 48, 52, 62, 78, 86, 103, 127, 141, 166, 201, 227, 266, 317, 358, 417, 492, 560, 647, 757, 860, 991, 1153, 1309, 1503, 1738, 1971, 2257, ...
[ "nonn" ]
A223459
[ 21, 400, 47100, 31075684, 116111266332, 2412122721426324, 280173531066504450000, 1.8035913879105137e+26, 6.463961870619024e+32 ]
[ "nonn" ]
A353747
[ 2, 2, 4, 3, 7, 4, 11, 5, 10, 7, 17, 6, 23, 11, 14, 9, 29, 10, 35, 11, 22, 17, 41, 10, 29, 23, 26, 17, 51, 14, 59, 17, 34, 29, 39, 16, 67, 35, 46, 19, 77, 22, 83, 27, 36, 41, 89, 18, 67, 29, 58, 35, 99, 26, 61...
[ "nonn" ]
A164623
[ 13, 157, 673, 1069, 1117, 1153, 1213, 1597, 2029, 2089, 2437, 2713, 2833, 3613, 4057, 4909, 5653, 6337, 6529, 7549, 7993, 8053, 9613, 10789, 11497, 11689, 12073, 12373, 13309, 13669, 13789, 14173, 15289, 15937, 16249, 18097, 18637, 19249, 1...
[ "nonn", "easy" ]
A087894
[ 3, 5, 11, 13, 17, 19, 23, 37, 41, 43, 47, 53, 59, 61, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 25...
[ "nonn" ]
A166234
[ 1, 1, 1, -1, 1, 1, 1, -1, -1, 1, 1, -1, 1, 1, 1, 0, 1, -1, 1, -1, 1, 1, 1, -1, -1, 1, -1, -1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1, 1, -1, 1, 1, 1, -1, -1, 1, 1, 0, -1, -1, 1, -1, 1, -1, 1, -1, 1, 1, 1, -1...
[ "mult", "sign" ]
A113742
[ 1, 6, 16, 30, 48, 72, 102, 132, 168, 210, 258, 318, 360, 418, 492, 540, 622, 714, 780, 870, 972, 1054, 1174, 1260, 1392, 1488, 1590, 1714, 1848, 2022, 2118, 2292, 2398, 2580, 2718, 2878, 3054, 3234, 3360, 3570, 3754, 3948, 4114, 4...
[ "nonn" ]
A216863
[ 1, 4, 1, 2, 7, 9, 4, 5, 8, 5, 7, 2, 7, 6, 2, 2, 2, 4, 5, 2, 9, 3, 5, 7, 7, 5, 8, 6, 5, 0, 6, 6, 3, 7, 6, 3, 2, 1, 2, 4, 5, 5, 8, 8, 9, 1, 2, 7, 3, 8, 1, 5, 1, 6, 5, 8, 6, 4, 1, 7, 7, 5, 2, 5...
[ "nonn", "cons" ]
A093569
[ 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 6, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 4, 0, 0, 0, 0, 0, 2, 0, 2, 2, 0, 0, 0, 0, 0, 0...
[ "nonn" ]
A367054
[ 0, 0, 2, 0, 0, 4, 4, 0, 0, 2, 2, 0, 0, 8, 8, 0, 0, 2, 2, 0, 0, 4, 4, 0, 0, 2, 2, 0, 0, 16, 16, 0, 0, 2, 2, 0, 0, 4, 4, 0, 0, 2, 2, 0, 0, 8, 8, 0, 0, 2, 2, 0, 0, 4, 4, 0, 0, 2, 2, 0, 0, 32, 32,...
[ "nonn" ]
A043560
[ 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1...
[ "nonn", "base" ]
A269657
[ 1, 15, 79, 253, 621, 1291, 2395, 4089, 6553, 9991, 14631, 20725, 28549, 38403, 50611, 65521, 83505, 104959, 130303, 159981, 194461, 234235, 279819, 331753, 390601, 456951, 531415, 614629, 707253, 809971, 923491, 1048545, 1185889, 1336303 ]
[ "nonn" ]
A213363
[ 1, 3, 4, 7, 8, 10, 14, 16, 19, 20, 25, 28, 32, 33, 35, 41, 45, 47, 54, 59, 60, 63, 68, 74, 82, 85, 86, 90, 92 ]
[ "nonn", "tabf", "hard", "more" ]
A314522
[ 1, 5, 8, 14, 20, 25, 30, 37, 40, 44, 54, 57, 56, 63, 74, 76, 78, 89, 94, 93, 98, 108, 112, 115, 122, 125, 130, 138, 142, 145, 154, 159, 156, 164, 176, 177, 178, 189, 196, 194, 200, 209, 212, 215, 222, 228, 232, 239, 242,...
[ "nonn" ]
A134061
[ 1, 3, 5, 3, 10, 5, 3, 15, 15, 5, 3, 20, 30, 20, 5, 3, 25, 50, 50, 25, 5, 3, 30, 75, 100, 75, 30, 5, 3, 35, 105, 175, 175, 105, 35, 5, 3, 40, 140, 280, 350, 280, 140, 40, 5, 3, 45, 180, 420, 630, 630, 420, 180, ...
[ "nonn", "tabl", "easy" ]
A234671
[ 1778412, 12470688, 87273500, 612823800, 4310166424, 30383174872, 214543149212, 1518177199612, 10760923462440, 76431308293764, 543736436534596, 3875894712574776 ]
[ "nonn" ]
A095447
[ 21, 23, 25, 27, 30, 33, 36, 43, 102, 123, 1000, 11011, 1.111111111111111e+26 ]
[ "nonn", "fini", "full" ]
A362737
[ 1, 1, -1, 10, -27, 316, -3725, 63666, -1177687, 25196536, -607345209, 16391726110, -488872392371, 15968546353332, -566886190710853, 21733419523383944, -894910999976666400, 39390009619800980000, -1.845602126785663e+21, 9.17148591825218e+22 ]
[ "sign" ]
A139983
[ 29, 109, 181, 269, 421, 509, 661, 829, 941, 1021, 1181, 1229, 1381, 1549, 1709, 1741, 1789, 1861, 2029, 2141, 2269, 2309, 2389, 2549, 2621, 2749, 2789, 2909, 3061, 3109, 3181, 3221, 3229, 3301, 3461, 3701, 3821, 3989, 4021, 4421, 4549 ]
[ "nonn", "easy" ]
A305948
[ 1, 4, 23, 959, 126733, 52618569, 64233268442, 231757210785889, 2449990554327149000 ]
[ "nonn" ]
A168238
[ 1, 4, 29, 263, 2724, 30554, 361677, 4454273, 56546511, 735298671, 9749613914, 131377492010, 1794546880363, 24798396567242, 346130144084641, 4873560434459530, 69149450121948080, 987844051312409700, 14198028410251735000, 205181815270346720000 ]
[ "nonn" ]
A178736
[ 0, 11, 22, 29, 44, 55, 58, 65, 88, 83, 110, 101, 116, 143, 130, 153, 176, 187, 166, 173, 220, 199, 202, 241, 232, 227, 286, 277, 260, 319, 306, 297, 352, 363, 374, 381, 332, 343, 346, 417, 440, 435, 398, 389, 404, 495, 482, ...
[ "nonn" ]
A371212
[ 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 3, 1, 1, 1, 1, 3, 2, 1, 1, 1, 3, 1, 3, 1, 1, 3, 1, 1, 3, 2, 3, 1, 1, 1, 3, 3, 3, 1, 1, 1, 5, 1, 1, 3, 2...
[ "nonn" ]
A370274
[ 1, 1, 3, 16, 67, 276, 1212, 5391, 24003, 107719, 486728, 2208735, 10059868, 45970367, 210657177, 967636566, 4454109123, 20540731356, 94882599285, 438931979661, 2033217678792, 9429562243530, 43779688919145, 203463271733010, 946445226206940, 4406251540834026 ]
[ "nonn" ]
A212364
[ 1, 1, 1, 1, 1, 1, 2, 4, 7, 11, 16, 23, 35, 57, 96, 161, 264, 425, 682, 1106, 1821, 3030, 5055, 8412, 13956, 23145, 38487, 64261, 107673, 180762, 303651, 510187, 857692, 1443597, 2433495, 4108299, 6943862, 11746362, 19883655, 33681015, 5...
[ "nonn" ]
A066860
[ 15, 20, 24, 95, 104, 207, 224, 287, 464, 1023, 1199, 1952, 4095, 4607, 8036, 12095, 15872, 16895, 19359, 22932, 23519, 28799, 45440, 45695, 54144, 77375, 101567, 102024, 130304, 159599, 163295, 223199, 296207, 317184, 352799, 522752, 524160 ]
[ "nonn" ]
A257416
[ 720, 1008, 1152, 1200, 1575, 1584, 1800, 1872, 2205, 2352, 2448, 2475, 2736, 2800, 2925, 3072, 3200, 3312, 3528, 3675, 3825, 3888, 3920, 4176, 4275, 4400, 4464, 4851, 5120, 5175, 5200, 5328, 5445, 5733, 5808, 5904, 6075, 6192, 6272, 6300,...
[ "nonn" ]
A009054
[ 1, -1, 1, 47, -895, 31, 1002497, -53580465, -8587007, 305732208959, -30437638147583, -144862063593105, 545283874522872200, -85823970766230260000, -801780964397998300000, 3.6379651885786155e+24 ]
[ "sign" ]
A111459
[ 1, 1, 1, 1, 2, 3, 35, 313, 26261407, 1001689887346, 3.568797515575951e+35, 3.2219745757880166e+57 ]
[ "nonn" ]
A374242
[ 1, 1, 3, 9, 3, 1, 5, 9, 1, 1, 1, 1 ]
[ "nonn", "hard", "more" ]
A251967
[ 1, 0, 4, 0, 7, 1, 9, 9, 3, 4, 8, 7, 1, 1, 7, 4, 5, 1, 9, 7, 7, 8, 7, 1, 8, 9, 0, 8, 5, 0, 2, 2, 4, 5, 9, 0, 3, 7, 7, 8, 3, 9, 5, 1, 0, 2, 3, 2, 7, 1, 6, 2, 1, 7, 9, 5, 4, 8, 8, 3, 2, 8, 7, 6...
[ "nonn", "cons" ]
A137078
[ 2, 3, 4943, 499423, 49993443, 4999932923, 499999999293429250000, 4.999999999992934e+23 ]
[ "base", "nonn", "more" ]
A120003
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 22, 28, 33, 38, 42, 46, 50, 54, 56, 68, 70, 75, 83, 87, 93, 96, 101, 104, 106, 118, 125, 127, 131, 135, 143, 146, 149, 155, 157, 169, 181, 186, 188, 192, 197, 200, 208, 211, 213...
[ "nonn" ]
A319750
[ 1, 3, 33, 3927, 55602393, 11147016454528648, 4.480112921650376e+32, 7.236850438246076e+65 ]
[ "nonn", "frac", "easy" ]
A119144
[ 1, 6, 66, 91, 666, 961191, 996166, 1191196, 96111966961, 99119996661, 16161696119661, 196999111911966, 661969169911666, 11961669169169616, 19961691661699160, 991961666199161900, 6116119911196617000, 1.6961161696691612e+22, 9.116666919911112e+23 ]
[ "nonn", "base" ]
A115751
[ 1, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1, 4, 1, 2, 3, 2, 1, 3, 1, 3, 2, 2, 1, 4, 2, 2, 2, 3, 1, 5, 1, 3, 2, 2, 2, 5, 1, 2, 2, 4, 1, 5, 1, 3, 3, 2, 1, 6, 2, 3, 2, 3, 1, 4, 2, 5, 2, 2, 1, 6, 1, 2, 4, 4...
[ "nonn" ]
A286724
[ 1, 2, 1, 8, 8, 1, 48, 72, 18, 1, 384, 768, 288, 32, 1, 3840, 9600, 4800, 800, 50, 1, 46080, 138240, 86400, 19200, 1800, 72, 1, 645120, 2257920, 1693440, 470400, 58800, 3528, 98, 1, 10321920, 41287680, 36126720, 12042240, 1881600, 1505...
[ "nonn", "tabl", "easy" ]
A059364
[ 1, 2, 1, 6, 7, 2, 24, 46, 29, 6, 120, 326, 329, 146, 24, 720, 2556, 3604, 2521, 874, 120, 5040, 22212, 40564, 39271, 21244, 6084, 720, 40320, 212976, 479996, 598116, 444849, 197380, 48348, 5040, 362880, 2239344, 6023772, 9223012, 878856...
[ "easy", "nonn", "tabl" ]
A005585
[ 1, 7, 27, 77, 182, 378, 714, 1254, 2079, 3289, 5005, 7371, 10556, 14756, 20196, 27132, 35853, 46683, 59983, 76153, 95634, 118910, 146510, 179010, 217035, 261261, 312417, 371287, 438712, 515592, 602888, 701624, 812889, 937839, 1077699, 1233765, ...
[ "nonn", "easy" ]
A271324
[ 0, 2, 4, 6, 5, 7, 9, 11, 10, 12, 14, 16, 15, 17, 19, 21, 20, 22, 24, 26, 25, 27, 29, 31, 30, 32, 34, 36, 35, 37, 39, 41, 40, 42, 44, 46, 45, 47, 49, 51, 50, 52, 54, 56, 55, 57, 59, 61, 60, 62, 64, 66, 65, 67, ...
[ "nonn", "easy" ]
A057130
[ 5, 55, 935, 21505, 623645, 25569445, 1201763915, 63693487495, 3757915762205, 266812019116555, 22145397586674064, 1970940385213991700, 199064978906613200000, 2.129995274300761e+22, 2.4068946599598597e+24, 3.1530320045474164e+26 ]
[ "nonn", "easy" ]
A337233
[ 35, 119, 169, 385, 741, 779, 899, 935, 961, 1105, 1121, 1189, 1443, 1479, 2001, 2419, 2555, 2915, 3059, 3107, 3383, 3605, 3689, 3741, 3781, 3827, 4199, 4795, 4879, 4901, 5719, 6061, 6083, 6215, 6265, 6441, 6479, 6601, 6895, 6929, 6931, ...
[ "nonn" ]
A207108
[ 13, 169, 677, 1835, 4047, 7837, 13863, 22931, 36009, 54241, 78961, 111707, 154235, 208533, 276835, 361635, 465701, 592089, 744157, 925579, 1140359, 1392845, 1687743, 2030131, 2425473, 2879633, 3398889, 3989947, 4659955, 5416517, 6267707 ]
[ "nonn" ]
A328161
[ 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 19, 21, 22, 23, 24, 25, 26, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 41, 43, 45, 46, 47, 48, 49, 51, 53, 55, 57, 58, 59, 60, 61, 62, 63, 65, 67, 69, 70, 71, ...
[ "nonn" ]
A220053
[ 1, 2, 3, 3, 4, 6, 4, 6, 7, 10, 5, 8, 9, 11, 15, 6, 10, 12, 13, 16, 21, 7, 12, 15, 16, 18, 22, 28, 8, 14, 18, 20, 21, 24, 29, 36, 9, 16, 21, 24, 25, 27, 31, 37, 45, 10, 18, 24, 28, 30, 31, 34, 39, 46, 55, 11...
[ "nonn", "tabl", "easy" ]
A347623
[ 1, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 12, 11, 14, 13, 15, 14, 18, 15, 20, 17, 22, 18, 25, 19, 26, 20, 26, 21, 30, 23, 33, 24, 35, 26, 38, 27, 40, 28, 41, 31, 48, 32, 50, 34, 53, 36, 58, 37, 60, 39, 61, ...
[ "nonn" ]
A194383
[ 2, 3, 5, 6, 8, 9, 11, 12, 14, 15, 17, 20, 23, 26, 29, 32, 52, 55, 58, 61, 64, 67, 69, 70, 72, 73, 75, 76, 78, 79, 81, 82, 84, 85, 86, 88, 89, 91, 92, 94, 95, 97, 98, 100, 101, 102, 104, 105, 107, 108, 110, 111, 1...
[ "nonn" ]
A112706
[ 1, 2, 4, 9, 26, 103, 542, 3529, 26901, 232416, 2233500, 23576045, 270690473, 3353312672, 44520193362, 629960268107, 9456454463204, 149995788999117, 2505304374275816, 43928236200319750, 806397434192280400 ]
[ "nonn", "easy" ]
A318627
[ 0, 1, 452, 6198, 33594, 118755, 324516, 749398, 1533686, 2869719, 5005980, 8259888, 13019358, 19757815, 29033576, 41507700, 57939438, 79208745, 106307256, 140364532, 182635562, 234531357, 297600576, 373566942, 464304450, 571880029, 698523980, 846678498 ]
[ "nonn", "easy" ]
A206005
[ 228, 980, 2728, 12068, 33572, 150396, 419108, 1895206, 5286788, 24077032, 67200552, 307662788, 858930264, 3947689488, 11022344624, 50802408116, 141850386688, 655129480632, 1829250701552, 8460734276112, 23623691166880 ]
[ "nonn" ]
A264712
[ 1, 2, 2, 11, 94, 365, 2891, 30242, 207653, 2119577, 19807006, 218836016, 3149604508, 57791376424, 900430886016, 25428213982688 ]
[ "nonn" ]
A289043
[ 1, 11, 101, 1111, 11011, 111111, 1000111, 11111111, 100101111, 1111111111, 10110011111, 111111111111, 1000100111111, 11110111111111, 111110001111111, 1010001111111111, 11011111011111112, 101011011111111100, 1101011000111111200, 10101010111111110000 ]
[ "nonn", "easy" ]
A372759
[ 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 7, 7, 7, 7, 8, 8, 9, 9, 9, 10, 10, 10, 10, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 16, 16, 16, 17, 17, 17, 17, 18, 18, ...
[ "nonn" ]
A076776
[ 1, 2, 5, 10, 50, 500, 25000, 12500000, 312500000000, 3906250000000000000, 1.220703125e+30, 4.76837158203125e+48 ]
[ "nonn" ]
A250217
[ 1, 11, 18, 23, 25, 37, 68, 113, 115, 179, 229, 421, 545, 1129, 1451, 1481, 1847, 1987, 3099, 3329, 4391 ]
[ "nonn", "more" ]
A233999
[ 1, 2, 4, 8, 9, 11, 15, 16, 18, 22, 23, 25, 29, 30, 32, 36, 37, 39, 43, 44, 46, 49, 50, 51, 53, 57, 58, 60, 64, 65, 67, 71, 72, 74, 78, 79, 81, 85, 86, 88, 92, 93, 95, 98, 99, 100, 102, 106, 107, 109, 113, 114, 11...
[ "nonn", "easy" ]
A185134
[ 0, 0, 0, 1, 2, 5, 21, 103, 752, 7385, 91939, 1345933, 22170664, 401399440, 7887389438, 166897766824, 3781593764772 ]
[ "nonn", "hard", "more" ]
A156513
[ 3, 4, 174, 272, 48562, 360468, 211236822, 5909410784, 14595969900224 ]
[ "nonn" ]
A016464
[ 3, 1, 1, 2, 2, 36, 1, 660, 1, 1, 6, 10, 1, 1, 1, 2, 1, 2, 1, 2, 2, 7, 2, 11, 1, 2, 1, 1, 1, 2, 2, 1, 76, 3, 1, 1, 6, 6, 11, 2, 4, 1, 2, 18, 1, 1, 1, 1, 1, 15, 3, 1, 24, 2, 3, 1, 13, 1, 14, 1, 4, ...
[ "nonn", "cofr" ]
A192905
[ 0, 1, 3, 8, 25, 79, 248, 777, 2435, 7632, 23921, 74975, 234992, 736529, 2308483, 7235416, 22677769, 71078319, 222778856, 698249753, 2188505347, 6859373216, 21499148257, 67384199871, 211200478176, 661959956001, 2074763216131 ]
[ "nonn", "easy" ]
A076852
[ 0, 7, 12, 23, 62 ]
[ "nonn", "more" ]
A332653
[ 1, 2, 5, 19, 157, 1306, 19609, 266372, 5321721, 101001214, 2593742461, 61920391842, 1941507093541, 56984643437138, 2076518238897649, 72340172854919940, 3041324492229179400, 121440691499123470000, 5.784852794328402e+21, 2.6279936410629133e+23 ]
[ "nonn" ]
A061812
[ 0, 3, 8, 26, 32, 46, 54, 92, 115, 199, 268, 306, 326, 368, 390, 436, 796, 828, 861, 963, 1071, 1146, 1304, 1345, 1429, 1472, 1560, 2193, 2246, 2300, 2465, 2636, 2873, 2995, 3120, 3312, 3377, 3443, 3713, 3782, 3922, 3993, 4137, 473...
[ "easy", "nice", "nonn" ]
A252477
[ 3, 1, 2, 1, 3, 1, 4, 2, 1, 5, 1, 3, 6, 3, 2, 2, 7, 2, 4, 8, 2, 4, 3, 2, 4, 10, 5, 10, 5, 1, 5, 3, 11, 2, 12, 4, 4, 6, 4, 4, 13, 2, 13, 6, 14, 2, 2, 7, 15, 7, 5, 15, 3, 5, 5, 5, 16, 5, 8, 16, 3, ...
[ "nonn" ]