id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A211051
[ 1, 5, 45, 801, 27967, 1940165, 265677267, 71849269093, 38284388785363, 40154074645523976, 82859490626738390000, 3.3632957995419284e+23, 2.685093328682216e+27 ]
[ "nonn", "more" ]
A298212
[ 1, 1, 2, 1, 5, 2, 4, 2, 2, 5, 5, 2, 7, 4, 10, 4, 3, 2, 3, 5, 4, 5, 4, 2, 25, 7, 6, 4, 7, 10, 5, 8, 10, 3, 20, 2, 19, 3, 14, 10, 10, 4, 22, 5, 10, 4, 8, 4, 28, 25, 6, 7, 9, 6, 5, 4, 6, 7, 29, 10, 5...
[ "nonn" ]
A265277
[ 1, 8, 108, 2060, 50000, 1495152, 52706752, 2148128768, 99179705664, 5120302400000, 292159150705664, 18260381285388290, 1240576436601868300, 91029755275709960000, 7.174453510897287e+21, 6.044631535763567e+23, 5.421401780298297e+25, 5.157212788407883e+27, 5.1863084221341726e+29, ...
[ "nonn" ]
A107218
[ 29, 41, 61, 89, 229, 241, 281, 349, 421, 509, 601, 641, 661, 701, 709, 769, 809, 821, 881, 1009, 1049, 1109, 1181, 1201, 1229, 1249, 1289, 1301, 1321, 1381, 1409, 1481, 1549, 1669, 1709, 1789, 1801, 1901, 2029, 2069, 2089, 2141, 216...
[ "nonn", "easy" ]
A284906
[ 1, 4, 5, 8, 9, 11, 13, 16, 17, 20, 21, 23, 25, 28, 29, 31, 34, 35, 37, 40, 41, 44, 45, 47, 49, 52, 53, 56, 57, 59, 61, 64, 65, 67, 70, 71, 73, 76, 77, 80, 81, 83, 85, 88, 89, 91, 94, 95, 98, 99, 101, 103, 106, ...
[ "nonn", "easy" ]
A307304
[ 0, 1, 4, 13, 31, 66, 123, 214, 346, 535, 790, 1131, 1569, 2128, 2821, 3676, 4708, 5949, 7416, 9145, 11155, 13486, 16159, 19218, 22686, 26611, 31018, 35959, 41461, 47580, 54345, 61816, 70024, 79033, 88876, 99621, 111303, 123994, 137731, 15...
[ "nonn", "easy" ]
A031838
[ 4846, 5149, 6211, 6763, 7036, 7561, 9319, 9793, 9931, 10204, 10756, 10831, 11377, 11761, 11841, 11929, 12763, 12979, 13582, 13798, 13921, 14109, 14767, 14788, 15076, 15253, 15427, 15721, 16228, 16729, 16759, 16927, 17269, 17396, 17467, 17481, 1...
[ "nonn" ]
A316893
[ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 1, 3, 1, 2, 1, 1, 1, 2, 1, 5, 3, 1, 1, 5, 2, 9, 3, 3, 3, 4, 2, 6, 6, 3, 4, 9, 5, 10, 4, 10, 8, 15, 10, 21, 12, ...
[ "nonn" ]
A246692
[ 1, 2, 4, 8, 12, 16, 24, 32, 36, 48, 60, 64, 72, 84, 96, 108, 120, 128, 132, 136, 144, 168, 180, 192, 216, 240, 252, 256, 264, 272, 288, 300, 324, 336, 360, 384, 396, 408, 420, 432, 480, 504, 512, 528, 540, 544, 576, 588, ...
[ "nonn", "easy" ]
A295747
[ 21, 22, 26, 27, 32 ]
[ "nonn", "fini", "full" ]
A102182
[ 5, 9, 11, 18, 21, 29, 31, 64, 69, 76, 80, 81, 102, 111, 112, 120, 122, 133, 135, 136, 187, 212, 219, 314 ]
[ "nonn", "more", "less", "base" ]
A190185
[ 1, 1, 5, 1, 6, 1, 5, 1, 1, 40, 1, 1, 1, 1, 1, 1, 1, 13, 1, 1, 1, 5, 1, 15, 1, 3, 1, 2, 2, 5, 1, 1, 1, 1, 4, 5, 65, 1, 13, 1, 3, 4, 1, 1, 1, 4, 13, 1, 1, 2, 1, 3, 2, 2, 1, 10, 1, 20, 4, 15, 6, 1,...
[ "nonn", "cofr" ]
A192506
[ 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 78...
[ "nonn" ]
A179315
[ 1, 8, 2, 50, 16, 2, 3, 294, 100, 16, 4, 24, 6, 4, 1717, 588, 100, 32, 11, 150, 48, 12, 3, 32, 12, 5, 10194, 3434, 588, 200, 124, 882, 300, 96, 33, 24, 12, 200, 96, 24, 12, 40, 20, 6, 62284, 20388, 3434, 1176, 684, 288,...
[ "nonn", "tabf" ]
A220487
[ 1, 3, 4, 7, 8, 9, 11, 15, 17, 18, 19, 20, 23, 28, 30, 31, 32, 33, 34, 35, 37, 41, 43, 46, 52, 55, 57, 59, 60, 61, 62, 63, 64, 65, 66, 69, 74, 76, 80, 87, 90, 92, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, ...
[ "nonn", "tabf" ]
A062960
[ 1, 1, 3, 16, 65, 576, 2275, 27840, 78489, 236800, 767151, 13264560, 31184725, 640564848, 2082421125, 5514535936, 10924376001, 279876280320, 584912713825, 16888996800000, 37538691697521, 91766133606400, 272224952406045, 9248286151802880, 17279191734765624 ]
[ "easy", "nonn" ]
A234690
[ 232, 1148, 1148, 5472, 4416, 5472, 27344, 16580, 16580, 27344, 131200, 69336, 49480, 69336, 131200, 661952, 281612, 174320, 174320, 281612, 661952, 3196416, 1253088, 603480, 531984, 603480, 1253088, 3196416, 16276736, 5385236, 2377712, 1602224 ]
[ "nonn", "tabl" ]
A024810
[ 1, 2, 5, 10, 20, 40, 81, 162, 325, 651, 1303, 2607, 5215, 10430, 20860, 41721, 83443, 166886, 333772, 667544, 1335088, 2670176, 5340353, 10680707, 21361414, 42722829, 85445659, 170891318, 341782637, 683565275, 1367130551, 2734261102, 5468522204, 1093...
[ "nonn" ]
A323984
[ 1, 6, 8, 8, 0, 9, 1, 7, 9, 4, 9, 6, 4, 4, 6, 8, 6, 0, 0, 6, 1, 6, 8, 4, 7, 6, 2, 8, 0, 9, 6, 7, 8, 2, 2, 9, 4, 1, 1, 9, 6, 8, 1, 1, 8, 9, 2, 8, 7, 1, 8, 2, 3, 1, 2, 5, 6, 8, 4, 0, 5, 6, 0, 7...
[ "nonn", "cons" ]
A387048
[ 6, 10, 12, 14, 21, 22, 39, 40, 44, 46, 51, 54, 57, 62, 65, 69, 74, 80, 82, 86, 90, 91, 95, 104, 108, 111, 115, 119, 129, 134, 141, 155, 161, 164, 166, 172, 176, 187, 189, 202, 210, 212, 217, 221, 226, 232, 244, 248, 252,...
[ "nonn" ]
A169961
[ 1, 12, 276, 7140, 194580, 5461512, 156238908, 4529365776, 132601016340, 3911395881900, 116068178638776, 3461014728350400, 103619293824707400, 3112781199432937000, 93780365051563030000, 2.832430653037447e+21, 8.573382814551095e+22, 2.6000229266849767e+24 ]
[ "nonn" ]
A257710
[ 5, 32, 291, 661, 4102, 8515, 13685, 113558, 182368, 377701, 2290342, 5027232, 30483491, 63130838, 101378488, 840238915, 1349295285, 2794368792, 16944086651, 37191598501, 225516999142, 467042067835, 749998177365, 6216087516438, 9982086472888, 20672740082341 ]
[ "nonn", "easy" ]
A062758
[ 1, 4, 9, 64, 25, 1296, 49, 4096, 729, 10000, 121, 2985984, 169, 38416, 50625, 1048576, 289, 34012224, 361, 64000000, 194481, 234256, 529, 110075314176, 15625, 456976, 531441, 481890304, 841, 656100000000, 961, 1073741824, 1185921 ]
[ "nonn" ]
A270757
[ 9, 16, 41, 127, 456, 1845, 8257, 40338, 212983, 1205911, 7275802, 46534535, 314117861, 2229489144, 16584674293, 128934314027, 1044976711816, 8809644039105, 77101357474077, 699264675713410, 6561367477780443, 63603478257343890, 636087039930484600 ]
[ "nonn" ]
A137285
[ 1, 2, 3, 5, 7, 9, 12, 15, 19, 23, 27, 32, 37, 43, 49, 56, 63, 70, 78, 86, 95, 104, 113, 123, 133, 144, 155, 167, 179, 191, 204, 217, 231, 245, 259, 274, 289, 305, 321, 338, 355, 372, 390, 408, 427, 446, 466, 486, 506, ...
[ "nonn" ]
A072376
[ 0, 1, 1, 1, 2, 2, 2, 2, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, ...
[ "easy", "nonn" ]
A104674
[ 1, 84, 2184, 30576, 286650, 2018016, 11435424, 54609984, 226972746, 840639800, 2824549728, 8730426432, 25099975992, 67725379008, 172768824000, 419252346240, 972796459635, 2167754048460, 4656656844840, 9674494830000, 19494107082450, 38192536324800, 72913023892800 ]
[ "easy", "nonn" ]
A002451
[ 1, 14, 147, 1408, 13013, 118482, 1071799, 9668036, 87099705, 784246870, 7059619931, 63542171784, 571901915677, 5147206719578, 46325218390143, 416928397167052, 3752361301126529, 33771274616631010, 303941563175648060, 2735474435084708400, 24619271381777880000 ]
[ "nonn", "easy" ]
A261585
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8...
[ "nonn", "base" ]
A195062
[ 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1...
[ "nonn", "easy" ]
A153590
[ 2, 3, 5, 7, 19, 23, 29, 37, 43, 47, 53, 59, 67, 113, 137, 139, 157, 163, 173, 179, 229, 239, 257, 263, 293, 313, 349, 353, 359, 373, 379, 419, 449, 467, 499, 503, 509, 547, 577, 587, 593, 617, 643, 647, 653, 719, 727, 797,...
[ "nonn", "easy" ]
A097574
[ 5, 18, 90, 264 ]
[ "dead" ]
A002549
[ 1, 1, 23, 11, 563, 1627, 88069, 1423, 1593269, 7759469, 31730711, 46522243, 3788707301, 2888008157, 340028535787, 41743955887, 10823198495797, 2738032559863, 409741429887649, 25876414060339, 17141894231615608 ]
[ "nonn", "frac" ]
A303239
[ 1, 34, 60, 255, 1106, 5158, 23995, 108726, 506416, 2400455, 11206914, 52620426, 248789167, 1172758534, 5532271468, 26154017151, 123634836850, 584566350050, 2765874355363, 13089996381214, 61961733243948, 293379713085303 ]
[ "nonn" ]
A082940
[ 1, 2, 22, 141, 171, 202, 333, 2002, 2772, 7227, 10401, 10701, 12221, 13131, 14841, 15651, 16461, 17271, 20002, 21212, 25452, 26262, 27072, 30303, 31113, 33633, 35253, 41814, 51615, 52425, 53235, 55755, 58185, 61416, 62226, 66366, 69696, 71217...
[ "nonn", "base" ]
A013506
[ 2, 362, 1199762, 19881945722, 1018678051268642, 125201903398211570000, 3.1486196823329536e+25, 1.4521097220214081e+31, 1.133467174895174e+37, 1.4082992180269282e+43, 2.6533369529542347e+49 ]
[ "nonn" ]
A268776
[ 7, 26, 91, 316, 1031, 3354, 10615, 33344, 103339, 317958, 970515, 2945172, 8888719, 26705714, 79909167, 238257768, 708129267, 2098664158, 6203795403, 18296271036, 53845375703, 158159174410, 463734769895, 1357486034320, 3967761581627 ]
[ "nonn" ]
A163959
[ 1, 14, 182, 2366, 30758, 399854, 5198011, 67572960, 878433192, 11419432752, 148450042104, 1929816959616, 25087183842630, 326127713832648, 4239586491528024, 55113665158705610, 716465177275138200 ]
[ "nonn" ]
A081834
[ 1, 4, 7, 11, 14, 17, 21, 24, 27, 30, 34, 37, 40, 44, 47, 50, 54, 57, 60, 63, 67, 70, 73, 77, 80, 83, 87, 90, 93, 97, 100, 103, 106, 110, 113, 116, 120, 123, 126, 130, 133, 136, 139, 143, 146, 149, 153, 156, 159, 163, ...
[ "nonn" ]
A088460
[ 11, 29, 137, 239, 641, 1151, 1931, 2339, 3851, 4091, 5639, 6359, 8231, 9011, 9431, 11351, 12161, 14561, 15731, 17837, 20441, 25931, 26951, 29207, 33767, 37781, 40847, 42407, 44381, 46439, 59471, 60917, 61979, 65171, 67427, 80831, 81929 ]
[ "nonn" ]
A316235
[ 5, 21, 29, 105, 365, 1135, 4802, 21363, 89321, 405822, 1896929, 8654183, 39947286, 186461083, 865540077, 4018601808, 18717997021, 87117032179, 405249228148, 1886517180747, 8782169235129, 40874255115294, 190262826619205 ]
[ "nonn" ]
A331788
[ 1, 3, 3, 7, 9, 9, 13, 15, 9, 19, 39, 39, 79, 99, 99, 139, 159, 99, 199, 399, 399, 799, 999, 999, 1399, 1599, 999, 1999, 3999, 3999, 7999, 9999, 9999, 13999, 15999, 9999, 19999, 39999, 39999, 79999, 99999, 99999, 139999, 159999, ...
[ "nonn", "base", "easy" ]
A165797
[ 1, 2, 9, 256, 625, 1679616, 117649, 8589934592, 3486784401, 100000000000000, 25937424601, 5.520614389124364e+23, 23298085122481, 8.36682554252848e+22, 3.3252567300796506e+23 ]
[ "nonn" ]
A310070
[ 1, 3, 6, 10, 14, 19, 24, 28, 31, 33, 36, 39, 43, 48, 53, 59, 64, 69, 71, 72, 75, 77, 83, 88, 94, 102, 105, 111, 111, 111, 115, 115, 124, 130, 137, 147, 147, 153, 150, 148, 154, 151, 163, 171, 178, 191, 188, 194, 189, 1...
[ "nonn" ]
A308242
[ 525, 705, 1725, 25935, 50325, 61755, 72345, 231735, 436821, 473109, 1188525, 2308911, 3353025, 4876437, 4953165, 5928285, 7739985, 8019375, 8224125, 18163299, 24088155, 28393365, 32717685, 40981125, 46830225, 89995191, 104334465, 124061925, 150079215, 177190...
[ "nonn" ]
A383210
[ 1, 1, 1, 0, 1, 1, 1, -2, 0, 1, 1, -1, 1, 1, 1, -3, 1, -1, 1, -1, 1, 1, 1, -5, 0, 1, -2, -1, 1, 1, 1, -2, 1, 1, 1, -2, 1, 1, 1, -5, 1, 1, 1, -1, -1, 1, 1, -6, 0, -1, 1, -1, 1, -5, 1, -5, 1, 1, 1, -3,...
[ "sign" ]
A011349
[ 1, 1, 4, 1, 0, 5, 4, 5, 3, 6, 0, 8, 3, 8, 2, 2, 6, 4, 0, 5, 7, 2, 8, 1, 7, 9, 2, 7, 0, 8, 4, 9, 6, 1, 7, 8, 6, 7, 0, 8, 0, 3, 2, 7, 3, 1, 3, 1, 1, 6, 7, 5, 2, 3, 6, 2, 6, 2, 7, 5, 0, 5, 8, 6...
[ "nonn", "cons" ]
A310812
[ 1, 4, 7, 13, 16, 23, 24, 31, 32, 41, 39, 48, 46, 56, 55, 63, 64, 73, 74, 81, 84, 91, 91, 98, 98, 106, 105, 113, 112, 123, 122, 131, 132, 141, 141, 148, 150, 156, 157, 163, 164, 173, 172, 181, 180, 191, 189, 198, 198, 2...
[ "nonn" ]
A316153
[ 15, 33, 45, 93, 153, 177, 275, 327, 369, 405, 425, 537, 603, 605, 775, 831, 891, 1025, 1059, 1125, 1413, 1445, 1475, 1641, 1705, 1719, 1761, 2057, 2075, 2319, 2511, 2577, 2979, 3175, 3179, 3189, 3459, 3485, 3603, 3609, 3825, 3925, 4...
[ "nonn" ]
A123165
[ 1, 1, 2, 5, 11, 143, 1847, 24127, 2101931, 96398196, 9362963203, 3376252046640, 551993132054154, 434634824535802600, 528116646162507500000, 3.72831439174848e+23, 2.0298629484267662e+27 ]
[ "nonn" ]
A285772
[ 1, 0, 10, 0, 100, 0, 101000, 0, 10000, 0, 10100000, 0, 10001000000, 0, 10101010000000, 0, 100000000, 0, 101000000000, 0, 100010000000000, 0, 101010100000000000, 0, 100000001000000000000, 0, 1.0100000101e+23, 0, 1.000100010001e+26, 0 ]
[ "nonn", "easy" ]
A154459
[ 8, 2, 9, 8, 0, 0, 7, 5, 3, 6, 8, 2, 5, 6, 5, 4, 7, 5, 5, 1, 8, 5, 7, 7, 6, 6, 2, 6, 5, 6, 4, 8, 2, 1, 7, 8, 1, 1, 7, 6, 3, 8, 2, 9, 2, 9, 6, 1, 4, 0, 3, 5, 6, 0, 4, 5, 5, 6, 8, 6, 8, 1, 7, 3...
[ "nonn", "cons" ]
A040203
[ 14, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, 1, 3, 3, 1, 28, ...
[ "nonn", "cofr", "easy" ]
A277482
[ 0, 0, 2, 9, 56, 480, 5394, 75775, 1280376, 25270056, 569899770, 14444562803, 406204015524, 12545427045008, 422007399953398, 15354968442741136, 600807449737710800, 25153741340051796000, 1.1219170086080642e+21, 5.3107023489332465e+22, 2.658946993059795e+24 ]
[ "nonn" ]
A317754
[ 1, 0, -1, 0, 1, 0, 1, 0, -1, 0, -1, -2, -1, 0, -1, 0, 1, 0, 1, 2, 3, 2, 1, 0, 1, 2, 3, 2, 1, 0, 1, 0, -1, 0, -1, -2, -3, -4, -3, -2, -1, 0, -1, -2, -3, -4, -5, -6, -5, -4, -3, -2, -1, 0, -1, -2, -3, -4,...
[ "sign", "look", "hear" ]
A132773
[ 0, 32, 66, 102, 140, 180, 222, 266, 312, 360, 410, 462, 516, 572, 630, 690, 752, 816, 882, 950, 1020, 1092, 1166, 1242, 1320, 1400, 1482, 1566, 1652, 1740, 1830, 1922, 2016, 2112, 2210, 2310, 2412, 2516, 2622, 2730, 2840, 2952, 3066...
[ "nonn", "easy" ]
A147414
[ 1, 1, 1, 5, 1, 11, 9, 68, 153, 1684, 1679, 71570, 36923, 5414251, 2307043, 500915628, 344960766, 114097346426, 84657360537, 60278905221018, 32340840584502, 57465415940963550, 25612067643691050, 97100554928558160000 ]
[ "nonn" ]
A045655
[ 1, 2, 6, 20, 54, 152, 348, 884, 1974, 4556, 10056, 22508, 48636, 106472, 228444, 491120, 1046454, 2228192, 4713252, 9961436, 20960904, 44038280, 92252100, 192937940, 402599676, 838860152, 1744723896, 3623869388, 7515962172 ]
[ "nonn" ]
A330202
[ 131, 12130303121, 131302030203131, 12130313131303120, 13020303130302032, 13030212121203032, 1213130303030313200, 1312131302031312100, 121312031202130210000, 130212020303020210000, 130212121303121220000, 130312121202121210000, 1.2020312021312022e+22, 1.2121212031213022e+22 ]
[ "nonn", "base" ]
A099053
[ 1, 1, 2, 2, 3, 3, 4, 3, 3, 4, 4, 4, 5, 4, 4, 3, 4, 4, 5, 5, 6, 5, 5, 5, 4, 5, 4, 5, 5, 5, 5, 4, 5, 5, 5, 4, 5, 5, 6, 6, 7, 6, 7, 6, 6, 6, 6, 5, 5, 5, 6, 6, 6, 5, 6, 6, 7, 6, 7, 6, 6, 5, 5, 4...
[ "nonn" ]
A265870
[ 1, 1, 2, 1, 2, 6, 1, 4, 42, 24, 1, 6, 340, 984, 120, 1, 12, 3136, 56496, 48216, 720, 1, 20, 30456, 3965392, 28645840, 2869200, 5040, 1, 40, 307464, 307543008, 21193260208, 20091622560, 278125200, 40320, 1, 70, 3182784, 25346247472, 1767...
[ "nonn", "tabl" ]
A148667
[ 1, 1, 3, 7, 19, 60, 169, 539, 1713, 5412, 18241, 58932, 197794, 670464, 2252141, 7793403, 26523661, 91645156, 319356023, 1106651892, 3895231214, 13604856592, 47889319173, 169562551244, 598458138702, 2132024158112, 7562668836374, 26957742010368, 96480822451924,...
[ "nonn", "walk" ]
A216937
[ 2, 3, 10, 4, 53, 52, 5, 200, 1211, 260, 6, 606, 17336, 27768, 1256, 7, 1572, 175869, 1664244, 618013, 5908, 8, 3630, 1374208, 64697626, 161114424, 13312100, 27224, 9, 7656, 8737047, 1783839948, 25604764159, 15316983096, 278398992, 123432, 10 ]
[ "nonn", "tabl" ]
A356247
[ 1, 5, 11, 19, 29, 41, 11, 71, 89, 109, 131, 31, 181, 19, 239, 271, 61, 31, 379, 419, 461, 101, 29, 599, 59, 701, 151, 811, 79, 929, 991, 211, 59, 41, 1259, 1, 281, 1481, 1559, 149, 1721, 1, 61, 1979, 2069, 2161, 1, 2351, ...
[ "nonn", "easy", "frac" ]
A220854
[ 0, 1, 1, 1, 3, 4, 5, 5, 5, 5, 5, 5, 5, 8, 10, 12, 13, 14, 15, 16, 17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 22, 25, 28, 30, 32, 34, 36, 38, 40, 41, 42, 43, 44, 45, 46, ...
[ "nonn" ]
A333076
[ 56, 24, 800, 608, 64, 16, 4136, 3400, 1272, 464, 40, 13840, 10800, 5296, 1264, 288, 64, 33160, 30048, 14744, 4456, 840, 152, 32, 70832, 62208, 30848, 8656, 1936, 288, 48, 129624, 124224, 61560, 19312, 4168, 840, 64, 16, 0, 8, 225200, ...
[ "nonn", "tabf" ]
A057541
[ 1, 71, 449, 559, 631, 881, 1009, 1079, 1441, 1511, 1639, 1889, 1961, 2071, 2449, 2519, 2521, 2591, 2969, 3079, 3151, 3401, 3529, 3599, 3961, 4031, 4159, 4409, 4481, 4591, 4969, 5039, 5041, 5111, 5489, 5599, 5671, 5921, 6049, 6119, 6481,...
[ "nonn", "easy" ]
A366941
[ 7, 25, 175, 625, 4375, 15625, 109375, 390625, 2734375, 9765625, 68359375, 244140625, 1708984375, 6103515625, 42724609375, 152587890625, 1068115234375, 3814697265625, 26702880859375, 95367431640625, 667572021484375, 2384185791015625, 16689300537109376, 59604644775390620,...
[ "nonn", "easy" ]
A291647
[ 1, 0, 2, 3, 1, 11, 3, 20, 21, 20, 64, 35, 112, 117, 160, 269, 284, 477, 598, 819, 1116, 1495, 1899, 2718, 3389, 4596, 6121, 7627, 10460, 13128, 17350, 22506, 28696, 37063, 47779, 60249, 78642, 98783, 126058, 160758, 200795, 257750, ...
[ "nonn" ]
A068557
[ 1, 1, 1, 1, 189, 189, 12474, 43659, 4191264, 37721376, 120406632192, 220745492352, 974812094226432, 78959779632341000, 4421747659411095600, 1658155372279160800, 49948354512933620000, 1.519878479474057e+24, 1.5633035788876014e+25 ]
[ "nonn", "frac" ]
A381999
[ 1, 1, 10, 156, 3656, 115400, 4595232, 221281312, 12510826624, 812633118336, 59642105050880, 4881685773730304, 440905471531302900, 43559980305765790000, 4.6732312708708434e+21, 5.410427269682311e+23, 6.723650101251755e+25, 8.927220151967827e+27 ]
[ "nonn" ]
A024817
[ 7, 34, 87, 176, 311, 499, 751, 1074, 1478, 1973, 2566, 3268, 4086, 5030, 6110, 7333, 8710, 10248, 11957, 13847, 15925, 18202, 20685, 23384, 26309, 29467, 32869, 36522, 40436, 44621, 49084, 53836, 58884, 64238, 69908, 75901, 82228, 88896, 95...
[ "nonn" ]
A087135
[ 1, 2, 2, 4, 4, 6, 8, 10, 12, 16, 20, 24, 30, 36, 44, 54, 64, 76, 92, 108, 128, 152, 178, 208, 244, 284, 330, 384, 444, 512, 592, 680, 780, 896, 1024, 1170, 1336, 1520, 1728, 1964, 2226, 2520, 2852, 3220, 3632, 4096, 4608, ...
[ "nonn" ]
A384191
[ 1, 2, 3, 7, 8, 9, 10, 11, 12, 16, 17, 18, 22, 23, 24, 25, 26, 27, 31, 32, 33, 34, 35, 36, 40, 41, 42, 46, 47, 48, 49, 50, 51, 55, 56, 57, 61, 62, 63, 64, 65, 66, 70, 71, 72, 73, 74, 75, 79, 80, 81, 85, 86, 87, ...
[ "nonn" ]
A122881
[ 1, 1, 2, 1, 2, 5, 1, 2, 5, 13, 1, 2, 5, 14, 34, 1, 2, 5, 14, 42, 89, 1, 2, 5, 14, 42, 131, 233, 1, 2, 5, 14, 42, 132, 417, 610, 1, 2, 5, 14, 42, 132, 429, 1341, 1597, 1, 2, 5, 14, 42, 132, 429, 1429, 4334, 41...
[ "nonn", "tabl" ]
A107807
[ 17, 7, 37, 3, 13, 11, 19, 29, 2, 23, 31, 41, 43, 47, 67, 61, 71, 73, 53, 5, 59, 79, 89, 83, 103, 101, 107, 97, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 22...
[ "nonn", "base" ]
A194682
[ 1, 0, 2, 1, 5, 4, 1, 6, 2, 9, 5, 0, 8, 2, 11, 5, 16, 10, 2, 14, 6, 20, 11, 1, 16, 5, 22, 11, 29, 18, 5, 24, 11, 32, 19, 4, 26, 10, 34, 18, 1, 26, 8, 34, 16, 44, 26, 6, 35, 14, 45, 24, 2, 34, 11, 45, 22, ...
[ "nonn" ]
A269197
[ 216, 9612, 400428, 15289548, 555862380, 19558138380, 672230393004, 22702294138188, 756261535626732, 24917784636315276, 813662963240248600, 26370904678702612000, 849277413026034500000, 2.720259746829886e+22 ]
[ "nonn" ]
A293067
[ 0, 0, 2, 6, 18, 58, 194, 658, 2242, 7650, 26114, 89154, 304386, 1039234, 3548162, 12114178, 41360386, 141213186, 482131970, 1646101506, 5620142082, 19188365314, 65513177090, 223675977730, 763677556738, 2607358271490, 8902077972482, 30393595346946 ]
[ "nonn", "easy" ]
A235412
[ 3249, 62070, 1623115, 48788187, 1561049902, 48150637857, 1547599117420, 44262446103282, 1328377496969266, 34333220990606470, 936029519726732800, 21814340948244420000 ]
[ "nonn" ]
A049121
[ 0, 1, 11, 111, 337, 3371, 33711, 317661, 3195573, 33134361, 313849599, 3714945219, 33412771691, 1341179350213, 7181173232711, 28979247806109, 3318731171903071, 191053757165759330, 3505114323880284000, 131572281752894110000, 1.0916403869735854e+21 ]
[ "nonn", "easy", "base", "nice" ]
A349151
[ 1, 2, 4, 6, 8, 9, 15, 16, 18, 24, 25, 32, 35, 36, 49, 50, 54, 60, 64, 72, 77, 81, 96, 98, 100, 121, 128, 135, 140, 143, 144, 150, 162, 169, 196, 200, 216, 221, 225, 240, 242, 256, 288, 289, 294, 308, 315, 323, 324, 338...
[ "nonn" ]
A181045
[ 1, 0, 9, 3, 9, 0, 5, 8, 8, 6, 0, 0, 3, 2, 0, 3, 0, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 8, 7, 5, 3, 0, 2, 4, 8, 8, 3, 2, 5, 7, 7, 3, 7, 0, 3, 6, 6, 3, 9, 7, 4, 4, 0, 1, 4, 0, 5, 5, 7, 0...
[ "cons", "nonn" ]
A087827
[ 1, 1, 1, 2, 3, 4, 4, 4, 4, 6, 5, 6, 6, 6, 6, 10, 7, 9, 8, 10, 9, 10, 10, 10, 10, 16, 10, 13, 12, 14, 13, 14, 12, 15, 15, 14, 16, 16, 16, 16, 16, 26, 14, 19, 18, 20, 19, 20, 18, 19, 19, 21, 21, 21, 21, 21, ...
[ "nonn" ]
A367434
[ 1, 4, 70, 4125, 803088, 516241856, 1097667526748, 7733677937945025, 180801869068010700000, 1.4039958885548007e+25, 3.6240525647901217e+30, 3.111116716392548e+36, 8.885709622433788e+42, 8.445689562076774e+49 ]
[ "nonn", "easy" ]
A025883
[ 1, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 2, 1, 1, 1, 1, 2, 1, 2, 1, 2, 2, 2, 2, 2, 3, 2, 3, 2, 3, 3, 3, 4, 3, 4, 3, 4, 4, 4, 5, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9...
[ "nonn", "easy" ]
A247051
[ 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 2, 1, 2, 1, 2, 1, 4, 3, 4, 4, 5, 4, 9, 8, 9, 12, 13, 12, 22, 21, 22, 33, 34, 33, 56, 55, 56, 88, 89, 88, 145, 144, 145, 232, 233, 232, 378, 377, 378, 609, 610, 609, 988, 987, 988...
[ "nonn", "tabf", "easy" ]
A161114
[ 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6...
[ "nonn" ]
A153247
[ 0, 0, 1, 1, 2, 1, 0, 2, 1, 3, 2, 0, 2, 1, 3, 1, 3, 3, 2, 1, 0, 2, 1, 4, 3, 1, 3, 2, 3, 1, 3, 3, 2, 1, 0, 2, 1, 4, 3, 0, 2, 1, 2, 2, 4, 4, 3, 3, 1, 3, 2, 2, 2, 0, 3, 1, 2, 3, 3, 2, 1, 1, 0, 2...
[ "nonn" ]
A315581
[ 1, 6, 12, 12, 18, 30, 30, 36, 36, 48, 54, 54, 60, 60, 78, 78, 78, 84, 90, 102, 102, 102, 108, 120, 126, 126, 126, 138, 144, 150, 150, 150, 168, 168, 174, 174, 180, 192, 192, 198, 198, 210, 216, 216, 222, 228, 234, 240, 2...
[ "nonn" ]
A060199
[ 0, 4, 5, 9, 12, 17, 21, 29, 32, 39, 49, 52, 58, 73, 76, 88, 92, 109, 117, 125, 140, 151, 159, 176, 188, 199, 207, 233, 247, 254, 267, 284, 305, 320, 346, 338, 373, 385, 416, 418, 437, 458, 481, 504, 517, 551, 555, 583, 5...
[ "nonn" ]
A287072
[ 0, 1, 2, 1, 0, 2, 1, 0, 1, 0, 2, 1, 0, 1, 2, 1, 0, 1, 0, 2, 1, 0, 1, 2, 1, 0, 2, 1, 0, 1, 2, 1, 0, 1, 0, 2, 1, 0, 1, 2, 1, 0, 2, 1, 0, 1, 0, 2, 1, 0, 1, 2, 1, 0, 2, 1, 0, 1, 2, 1, 0, 1, 0, 2...
[ "nonn", "easy" ]
A319218
[ 1, -1, -2, 3, 8, 75, -216, -175, -3816, -36225, 189800, 325149, 2375460, 25547951, 386162126, -3290670825, -6316583056, -59290501809, -310987223208, -4836373835707, -86500419684420, 1119358992256239, 3043733432729198, 26408738842522960, 169835931388147460 ]
[ "sign" ]
A334154
[ 1, 2, 5, 15, 54, 236, 1254, 7986, 59584, 509304, 4897272, 52237448, 611460432, 7787383488, 107155194928, 1583776282704, 25019083516416, 420609003810944, 7496930998018176, 141203784944996740, 2802115237399913500, 58432523737192740000, 1.2773721086178474e+21 ]
[ "nonn" ]
A255336
[ 0, 2, 2, 2, 4, 2, 2, 4, 4, 4, 2, 2, 2, 4, 6, 4, 4, 4, 4, 2, 2, 2, 4, 6, 4, 6, 6, 4, 2, 4, 6, 4, 4, 4, 4, 2, 2, 2, 4, 6, 4, 6, 4, 4, 6, 6, 6, 6, 6, 4, 2, 4, 6, 4, 6, 6, 4, 2, 4, 6, 4, 4, 4, 4...
[ "nonn" ]
A195293
[ 6, 1, 8, 4, 6, 5, 8, 4, 3, 8, 4, 2, 6, 4, 9, 0, 8, 2, 4, 7, 3, 2, 1, 1, 4, 7, 8, 3, 9, 6, 1, 1, 1, 5, 5, 3, 7, 7, 2, 0, 7, 9, 8, 8, 3, 8, 0, 6, 0, 4, 3, 0, 6, 5, 1, 5, 9, 7, 9, 5, 0, 3, 5, 9...
[ "nonn", "cons" ]
A095429
[ 11111111111111, 1110, 112, 32, 24, 22, 20, 16, 15, 14, 13, 12, 11, 10 ]
[ "nonn" ]
A075525
[ 1, 1, 1, 8, 3, 1, 6, 35, 6, 1, 144, 110, 95, 10, 1, 480, 1594, 585, 205, 15, 1, 5760, 8064, 8974, 1995, 385, 21, 1, 5040, 125292, 70252, 35329, 5320, 658, 28, 1, 524160, 684144, 1178540, 392364, 110649, 12096, 1050, 36, 1, 217...
[ "nonn", "tabl" ]
A271300
[ 4, 0, 39, -39, 104, -93, 197, -200, 323, -299, 455, -459, 639, -603, 832, -841, 1077, -1052, 1347, -1339, 1644, -1617, 1937, -1921, 2329, -2328, 2663, -2583, 3028, -3025, 3509, -3533, 4037, -3949, 4441, -4473, 5073, -5017, 5593, -5560, ...
[ "sign", "easy" ]
A043058
[ 1, 6, 31, 32, 33, 34, 35, 36, 181, 188, 195, 202, 209, 216, 1081, 1087, 1093, 1099, 1105, 1111, 1118, 1124, 1130, 1136, 1142, 1148, 1155, 1161, 1167, 1173, 1179, 1185, 1192, 1198, 1204, 1210, 1216, 1222, 1229, 1235, 1241 ]
[ "nonn", "base" ]