id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A215018
[ 1, 3, 7, 26, 91, 490, 2785, 20434, 171579, 1671193, 18192737, 218487504 ]
[ "nonn", "more" ]
A218834
[ 37, 47, 107, 211, 263, 373, 431, 521, 571, 631, 653, 719, 809, 821, 829, 941, 997, 1031, 1033, 1087, 1109, 1129, 1301, 1327, 1399, 1429, 1543, 1571, 1601, 1637, 1663, 1699, 1783, 1823, 1871, 1913, 1979, 1999, 2153, 2207, 2243, 2267, ...
[ "nonn" ]
A005665
[ 0, 1, 5, 15, 43, 119, 327, 895, 2447, 6687, 18271, 49919, 136383, 372607, 1017983, 2781183, 7598335, 20759039, 56714751, 154947583, 423324671, 1156544511, 3159738367, 8632565759, 23584608255, 64434348031, 176037912575, 480944521215, 1313964867583, 3589818777...
[ "nonn", "nice", "easy" ]
A366195
[ 11, 19, 22, 23, 35, 37, 38, 39, 43, 44, 45, 46, 47, 55, 67, 69, 70, 71, 74, 75, 76, 77, 78, 79, 83, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 103, 110, 111, 131, 133, 134, 135, 137, 138, 139, 140, 141, 142, 143, 147, 1...
[ "nonn", "base" ]
A159174
[ 1, 37, 896, 18309, 345814, 6302595, 113447598, 2044786613, 37229804787 ]
[ "nonn" ]
A367406
[ 1, 4, 9, 25, 36, 49, 16, 100, 121, 169, 196, 225, 289, 361, 441, 484, 529, 144, 676, 81, 841, 900, 961, 64, 1089, 1156, 1225, 1369, 1444, 1521, 400, 1681, 1764, 1849, 2116, 2209, 2601, 2809, 324, 3025, 784, 3249, 3364, 3481, 372...
[ "nonn", "easy" ]
A040211
[ 15, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, 15, 30, ...
[ "nonn", "cofr", "easy" ]
A371231
[ 1, 0, 2, 3, 152, 930, 42804, 574140, 27267456, 613793376, 31378237200, 1021391030880, 57256014687552, 2456525677525920, 152135168050833400, 8093376365276967000, 554533365688970300000, 3.508164964696925e+22, 2.6538403716740144e+24 ]
[ "nonn" ]
A339057
[ 1, 13, 121, 18581, 305071, 61203943, 4353296221, 6669149100757, 206772189255571, 128970681211645870, 24697503335329726000, 4.558335901813819e+22, 6.235055851689627e+24, 7.982707567621373e+27, 2.9554187044083806e+30, 4.010187813107164e+34 ]
[ "nonn" ]
A040829
[ 29, 3, 4, 5, 1, 1, 1, 2, 2, 3, 2, 19, 9, 1, 2, 1, 1, 4, 1, 3, 11, 2, 6, 29, 6, 2, 11, 3, 1, 4, 1, 1, 2, 1, 9, 19, 2, 3, 2, 2, 1, 1, 1, 5, 4, 3, 58, 3, 4, 5, 1, 1, 1, 2, 2, 3, 2, 19, 9, 1, 2, 1, ...
[ "nonn", "cofr", "easy" ]
A127218
[ 2, 2, 1, 2, 3, 3, 4, 6, 7, 8, 11, 14, 18, 22, 29, 36, 47, 58, 76, 94, 123, 152, 199, 246, 322, 398, 521, 644, 843, 1042, 1364, 1686, 2207, 2728, 3571, 4414, 5778, 7142, 9349, 11556, 15127, 18698, 24476, 30254, 39603, 48952, ...
[ "easy", "nonn" ]
A207719
[ 9, 81, 387, 2205, 12015, 66339, 364869, 2009223, 11059965, 60888177, 335192787, 1845279405, 10158455727, 55923440859, 307864679445, 1694829122631, 9330221332989, 51363898889337, 282763934436339, 1556646681947805 ]
[ "nonn" ]
A219597
[ 10, 46, 264, 1114, 4152, 14793, 51122, 170728, 550156, 1714425, 5181670, 15217623, 43453991, 120646669, 325663378, 854806408, 2182941966, 5428211529, 13157408701, 31124038143, 71939605189, 162674579688, 360302418944 ]
[ "nonn" ]
A296416
[ 1, 2, 3, 7, 14, 37, 97, 316, 934, 2362, 2814, 944, 59, 4, 1, 1, 0 ]
[ "nonn", "fini", "full" ]
A255331
[ -1, 0, 0, -4, 1, 0, -7, 0, -3, 1, 0, 3, 0, -6, 0, -6, 0, -3, 1, 0, 3, 0, -12, 0, 0, -5, 0, 4, 0, -6, 0, -6, 0, -3, 1, 0, 3, 0, -12, 0, 0, 7, 1, -12, 2, 0, 0, -5, 0, 4, 0, -12, 0, 0, -5, 0, 4, 0, -6, ...
[ "sign" ]
A085916
[ 1, 2, 2, 3, 2, 3, 4, 4, 6, 4, 5, 12, 12, 12, 5, 6, 48, 48, 72, 20, 6, 7, 240, 576, 864, 240, 30, 7, 8, 1440, 27648, 41472, 17280, 600, 42, 8, 9, 10080, 6635520, 23887872, 14929920, 144000, 1260, 56, 9, 10, 80640, 955514880...
[ "nonn", "tabl" ]
A218613
[ 0, 1, 2, 3, 2, 5, 6, 4, 4, 5, 5, 9, 10, 17, 17, 5, 19, 32, 6, 10, 8, 4, 3, 10, 33, 4, 5, 7, 34, 20, 31, 5, 62, 4, 7, 4, 5, 14, 33, 7, 54, 32, 12, 14, 3, 34, 47, 4, 8, 31, 32, 143, 10, 11, 17, 169, 13, 2...
[ "nonn" ]
A125917
[ 1, 1, 1, 2, 2, 2, 1, 1, 0, 2, 2, 2, 4, 4, 0, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 1, 1...
[ "nonn" ]
A128060
[ -1, 1, 1, 1, 1, 9, 1, 1, 15, 1, 1, 21, 1, 25, 27, 1, 1, 33, 35, 1, 39, 1, 1, 45, 1, 49, 51, 1, 55, 57, 1, 1, 63, 65, 1, 69, 1, 1, 75, 77, 1, 81, 1, 85, 87, 1, 91, 93, 95, 1, 99, 1, 1, 105, 1, 1, 111, 1,...
[ "easy", "sign" ]
A096156
[ 12, 20, 28, 44, 45, 52, 63, 68, 76, 92, 99, 116, 117, 124, 148, 153, 164, 171, 172, 175, 188, 207, 212, 236, 244, 261, 268, 275, 279, 284, 292, 316, 325, 332, 333, 356, 369, 387, 388, 404, 412, 423, 425, 428, 436, 452, 475, ...
[ "nonn", "easy", "changed" ]
A035263
[ 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1...
[ "nonn", "easy", "nice", "mult" ]
A251892
[ 1752, 790, 1636, 2660, 6072, 9836, 17774, 38612, 70970, 132530, 284490, 536930, 1021634, 2178338, 4172162, 8018690, 17036418, 32884226, 63532034, 134730242, 261101570, 505786370, 1071597570, 2080923650, 4036411394, 8547803138 ]
[ "nonn" ]
A326708
[ 4, 9, 25, 49, 169, 289, 361, 529, 841, 961, 1369, 1681, 1849, 2209, 2809, 3481, 3721, 4489, 5041, 5329, 6241, 6889, 7921, 9409, 10201, 10609, 11449, 11881, 12769, 16129, 17161, 18769, 19321, 22201, 22801, 24649, 26569, 27889, 29929, 32041...
[ "nonn", "base" ]
A304155
[ 0, 702, 1722, 60352, 839935, 12806826, 217640633, 3520683600, 56360283031, 925790421949, 14995653106319, 243449572143143, 3961555586460616, 64339957150977920, 1045521379732970200, 16993284073070123000 ]
[ "nonn" ]
A255258
[ 1, 2, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 3, 2, 0, 0, 2, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 1, 4, 0, 0, 4, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0...
[ "nonn" ]
A089441
[ 5, 11, 41, 47, 71, 131, 167, 197, 257, 281, 311, 347, 461, 467, 479, 491, 509, 521, 557, 599, 641, 647, 827, 839, 857, 911, 941, 977, 1061, 1097, 1109, 1151, 1181, 1187, 1217, 1229, 1259, 1289, 1307, 1319, 1439, 1499, 1571, 1601, ...
[ "easy", "nonn" ]
A011767
[ 9, 14, 17, 21, 25, 30, 34, 38, 42, 46, 50 ]
[ "nonn", "more" ]
A181182
[ 11, 31, 41, 61, 71, 137, 193, 257, 467, 1399, 2887, 35999, 599699, 4987999, 589998989, 2899889999, 58989999989, 58799999999999, 579999998999999, 19999999999998000, 199999999999899000, 499999999999899970, 699999999999980000, 799999999999989000, 4999999999998900000, 7...
[ "nonn", "base" ]
A053752
[ 12, 19, 27, 35, 36, 53, 68, 75, 79, 82, 85, 89, 102, 106, 108, 114, 125, 135, 148, 151, 153, 162, 172, 190, 198, 205, 206, 223, 229, 234, 237, 256, 268, 280, 306, 318, 319, 323, 324, 335, 353, 373, 374, 384, 426 ]
[ "nonn", "base" ]
A020441
[ 91, 304, 319, 432, 539, 555, 595, 671, 696, 703, 760, 891, 935, 1175, 1512, 1643, 1695, 1971, 2075, 2088, 2223, 2295, 2299, 2507, 2552, 2555, 2679, 2727, 3219, 3240, 3344, 3416, 3471, 3611, 4023, 4075, 4331, 4347, 4371, 5291, 5320, 53...
[ "nonn" ]
A296666
[ 1, 1, 2, 1, 2, 5, 6, 5, 2, 5, 14, 19, 20, 19, 14, 5, 14, 42, 62, 69, 70, 69, 62, 42, 14, 42, 132, 207, 242, 251, 252, 251, 242, 207, 132, 42, 132, 429, 704, 858, 912, 923, 924, 923, 912, 858, 704, 429, 132 ]
[ "nonn", "tabf" ]
A300474
[ 1, 1, 8, 96, 2240, 80960, 4021248, 255704064, 19878918144, 1829788646400, 194788537180160, 23556611967336450, 3191162612827078700, 478807179615908460000, 7.88339452482229e+22, 1.4133035289273287e+25, 2.740751307013006e+27 ]
[ "nonn" ]
A368414
[ 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 2, 1, 1, 3, 1, 3, 2, 2, 1, 4, 1, 2, 1, 3, 1, 5, 1, 1, 2, 2, 2, 5, 1, 2, 2, 4, 1, 5, 1, 3, 3, 2, 1, 5, 1, 3, 2, 3, 1, 4, 2, 4, 2, 2, 1, 9, 1, 2, 3, 1...
[ "nonn" ]
A255570
[ 1, 64, 65, 126, 127, 380, 381, 386, 387, 1056, 1057, 1090, 1091, 1156, 1157, 1274, 1275, 1286, 1287, 1288, 1289, 1518, 1519, 1552, 1553, 1782, 1783, 1784, 1785, 1796, 1797, 1914, 1915, 1980, 1981, 2014, 2015, 4096, 4097, 4158, 4159, 4...
[ "nonn", "base" ]
A378296
[ 0, 0, 0, 1, 32, 612, 9160, 118608, 1395872, 15356032, 160695936, 1618315776, 15811200000, 150746793984, 1408654503936, 12944302796800, 117272743264256, 1049672527036416, 9297570440642560, 81607973259116540, 710607254147956700, 6144222507232657000, 52794307266655810000 ]
[ "nonn", "easy" ]
A102915
[ 0, 10, 50, 110, 130, 200, 220, 250, 280, 290, 320, 380, 400, 460, 470, 490, 500, 530, 550, 590, 620, 670, 680, 710, 760, 770, 880, 910, 920, 940, 980, 1010, 1030, 1090, 1100, 1150, 1190, 1220, 1250, 1270, 1300, 1310, 1390, 1430, ...
[ "base", "nonn" ]
A084092
[ 1, 2, 3, 4, 5, 7, 8, 9, 11, 101, 121, 131, 151, 181, 191, 313, 343, 353, 373, 383, 727, 757, 787, 797, 919, 929, 1331, 10201, 10301, 10501, 10601, 11311, 11411, 12421, 12721, 12821, 13331, 13831, 13931, 14341, 14641, 14741, 15451, ...
[ "nonn", "base" ]
A012506
[ 1, 1, -19, 445, -14663, 718265, -50970203, 4876389557, -548752599567, 47436062951281, 12631837146241244, -15669443125044503000, 1.2502889747981009e+22, -9.927639811374323e+24 ]
[ "sign" ]
A387986
[ 0, 0, 0, 8, 8, 1, 1, 0, 8, 2, 8, 2, 7, 7, 8, 4, 2, 9, 0, 2, 8, 8, 0, 4, 9, 6, 5, 1, 9, 4, 6, 6, 6, 5, 9, 4, 4, 5, 1, 3, 7, 3, 5, 3, 7, 7, 6, 8, 6, 8, 8, 5, 7, 5, 1, 3, 2, 6, 4, 3, 0, 8, 5, 4...
[ "nonn", "cons" ]
A373526
[ 1, 1, 1, 1, 1, 91, 541, 1891, 5041, -22679, 703081, 9397081, 59946481, 510926131, -1770628859, 28435376971, 879567081121, 1118967005521, 133425791669521, -153681150137039, 1206979480409761, 974131304609110400, -2730300052811687000, 68047061689139820000 ]
[ "sign" ]
A316436
[ 1, 1, 2, 1, 3, 1, 3, 2, 4, 1, 4, 1, 5, 5, 4, 1, 5, 1, 5, 3, 6, 1, 5, 2, 7, 3, 6, 1, 6, 1, 5, 7, 8, 7, 6, 1, 9, 4, 6, 1, 7, 1, 7, 7, 10, 1, 6, 2, 7, 9, 8, 1, 7, 8, 7, 5, 11, 1, 7, 1, 12, 4, 6, ...
[ "nonn" ]
A254710
[ 1, 2, 9, 22, 119, 300, 1651, 4172, 22989, 58102, 320189, 809250, 4459651, 11271392, 62114919, 156990232, 865149209, 2186591850, 12049974001, 30455295662, 167834486799, 424187547412, 2337632841179, 5908170368100, 32559025289701, 82290197605982 ]
[ "nonn", "easy" ]
A245638
[ 4, 0, 9, 7, 3, 2, 1, 8, 3, 7, 0, 2, 3, 9, 6, 3, 4, 2, 9, 9, 0, 5, 6, 8, 8, 2, 3, 4, 9, 7, 6, 6, 4, 5, 9, 6, 4, 5, 4, 0, 9, 4, 3, 2, 0, 2, 8, 1, 4, 0, 8, 3, 8, 7, 3, 9, 5, 2, 3, 4, 8, 4, 0, 0...
[ "nonn", "cons", "easy" ]
A017424
[ 4096, 23298085122481, 36520347436056580, 3379220508056640500, 89762301673555230000, 1.1762462939034397e+21, 9.774779120406942e+21, 5.909151103167416e+22, 2.82429536481e+23, 1.1268250301319698e+24 ]
[ "nonn", "easy" ]
A125431
[ 1, 19, 229, 2371, 28117, 340639, 4206175, 52452531, 657946661, 8280460237, 104408596879, 1317891532471, 16644977894179, 210297040134369, 2657451892030143, 33584889901686420, 424471412263606140 ]
[ "nonn", "base" ]
A254740
[ 281213, 4613180, 74915756, 1036785574, 14206747097, 194159814879, 2619450227481, 35003055321356, 466031183725784, 6187215913991632, 81990319747610780, 1085261811495688600, 14355629312983443000 ]
[ "nonn" ]
A045904
[ 0, 0, 0, 1, 5, 31, 160, 825, 4074, 19902, 95920 ]
[ "nonn" ]
A340953
[ 1, 0, 8, 0, 28, 8, 56, 56, 70, 176, 84, 336, 196, 448, 492, 504, 953, 616, 1456, 960, 1814, 1792, 1904, 3032, 2100, 4144, 3052, 4768, 4670, 5264, 6720, 5936, 8876, 7112, 10620, 9648, 11718, 12720, 13216, 15960, 15261, 19608, 17164, ...
[ "nonn" ]
A389207
[ 28, 52, 64, 92, 100, 96, 124, 136, 316, 116, 172, 196, 188, 148, 232, 176, 280, 176, 248, 304, 316, 216, 340, 352, 236, 628, 424, 296, 460, 784, 484, 260, 392, 336, 532, 276, 556, 592, 604, 476, 316, 396, 344, 320, 700, 712, ...
[ "nonn" ]
A057432
[ 1, 1, 1, 2, 1, 3, 2, 3, 1, 4, 2, 5, 3, 5, 3, 4, 1, 5, 2, 7, 3, 8, 3, 7, 4, 7, 5, 8, 5, 7, 4, 5, 1, 6, 2, 9, 3, 11, 3, 10, 4, 11, 5, 13, 5, 12, 4, 9, 5, 9, 7, 12, 8, 13, 7, 11, 7, 10, 8, 11, 7, 9...
[ "nonn", "easy", "tabf" ]
A334203
[ 0, 0, 0, 1, 0, 2, 0, 2, 2, 3, 0, 3, 0, 4, 3, 3, 0, 4, 0, 4, 4, 5, 0, 4, 3, 5, 4, 5, 0, 5, 0, 4, 5, 5, 4, 5, 0, 6, 5, 5, 0, 6, 0, 6, 5, 7, 0, 5, 4, 6, 5, 6, 0, 6, 5, 6, 6, 7, 0, 6, 0, 7, 6, 5...
[ "nonn" ]
A226746
[ 4, 5, 6, 8, 10, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 24, 25, 26, 28, 29, 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 61, 62, 63, 64, 65, 66, 68, 69...
[ "nonn" ]
A205628
[ 396, 2052, 13068, 94116, 708300, 5439324, 42094188, 327077484, 2547102732, 19867584972, 155171240076, 1213352429196, 9498114849804, 74428751347980, 583820737433100, 4583937157350924, 36024984866070540, 283374615043095550 ]
[ "nonn" ]
A261126
[ 2, 2, 1, 2, 1, 1, 2, 2, 2, 1, 1, 3, 2, 3, 2, 2, 3, 3, 3, 3, 2, 4, 3, 4, 3, 3, 4, 4, 4, 4, 3, 5, 4, 5, 4, 4, 5, 5, 5, 5, 2, 4, 3, 4, 3, 3, 4, 4, 4 ]
[ "nonn", "word", "more" ]
A333822
[ 1, 3, 3, 5, 4, 6, 4, 8, 5, 7, 6, 8, 5, 10, 7, 9, 6, 8, 6, 13, 8, 8, 7, 12, 6, 12, 8, 10, 9, 10, 7, 13, 8, 12, 10, 13, 6, 13, 9, 12, 8, 10, 8, 17, 11, 10, 10, 14, 8, 16, 9, 10, 9, 14, 10, 19, 9, 8, 10,...
[ "nonn", "changed" ]
A056400
[ 0, 0, 0, 0, 0, 1, 4, 83, 454, 5761, 17998, 334797, 777107, 10574995, 52611728, 342199022, 1094122103, 18448004619, 38504610244, 538330833767, 2215487105217, 16330536710131, 45407723468330 ]
[ "nonn" ]
A230659
[ 0, 15, 135, 531, 8613, 28161, 477279, 1539207, 26178201, 84335553, 1434726783, 4621740687, 78627215025, 253283346081, 4308981442911, 13880597644287, 236143613924865, 760693546670625, 12941296146524512, 41688023124390690 ]
[ "nonn" ]
A277233
[ 1, 5, 89, 381, 25609, 106405, 1755841, 7207405, 1886504905, 7693763645, 125233642041, 508710104205, 33014475398641, 133748096600189, 2165115508033649, 8754452051708621, 9054883309760266000, 36559890613417480000, 590105629859261300000, 2.379942639329101e+21 ]
[ "nonn", "frac", "easy" ]
A179894
[ 1, 2, 3, 7, 7, 12, 11, 17, 15, 22, 19, 27, 23, 32, 27, 37, 31, 42, 35, 47, 39, 52, 43, 57, 47, 62, 51, 67, 55, 72, 59, 77, 63, 82, 67, 87, 71, 92, 75, 97, 79, 102, 83, 107, 87, 112, 91, 117, 95, 122, 99, 127, 103...
[ "nonn", "easy" ]
A222696
[ 0, 5440, 159672, 11082863, 301760538, 27752564898, 832227066041, 83923543594779, 2708485928608316, 290028583892214400, 9899860627729885000 ]
[ "nonn" ]
A123277
[ 18, 107, 427, 1490, 4590, 13298, 35971, 90268, 209337, 443940, 846043, 1440863, 2105423, 2482288, 2018188, 931601 ]
[ "nonn", "fini", "full" ]
A031023
[ 9, 23, 26, 28, 30, 37, 54, 75, 89, 92, 95, 96, 98, 117, 138, 159, 164, 167, 170, 180, 201, 222, 236, 239, 242, 243, 245, 264, 268, 271, 274, 277, 280, 283, 285, 286, 289, 292, 295, 298, 301, 304, 306, 307, 310, 311, 313, 3...
[ "nonn" ]
A343946
[ 4, 6, 8, 11, 14, 18, 21, 25, 30, 34, 39, 45, 50, 56, 62, 69, 76, 83, 91, 99, 107, 115, 124, 133, 142, 152, 162, 173, 183, 194, 206, 217, 229, 242, 254, 267, 281, 294, 308, 322, 337, 352, 367, 382, 398, 414, 431, 447, 464...
[ "nonn" ]
A199669
[ 7, 1, 9, 8, 5, 9, 8, 6, 7, 2, 0, 4, 1, 1, 7, 6, 4, 9, 3, 6, 1, 1, 3, 3, 4, 4, 0, 9, 1, 0, 7, 0, 0, 9, 5, 3, 2, 3, 1, 1, 8, 6, 0, 3, 7, 4, 7, 5, 9, 5, 9, 4, 6, 2, 6, 8, 9, 8, 0, 2, 9, 4, 6, 0...
[ "nonn", "cons" ]
A086438
[ 495918532948104, 495918532948102, 495891608417946, 483007233529142, 383383164274382, 230225870774004, 115103545069198, 51867074611628, 21896713385874, 8797540264506, 3380811983774, 1242984465990, 436291640046, 145679051728, 46051769064, 13699854872 ]
[ "nonn", "fini", "full" ]
A254782
[ 1, 11, 231, 5061, 111101, 2439151, 53550211, 1175665481, 25811090361, 566668322451, 12440892003551, 273132955755661, 5996484134620981, 131649518005905900, 2890292911995309000, 63454794545890890000, 1.3931151870976045e+21, 3.0585079321601405e+22 ]
[ "nonn", "easy" ]
A156693
[ 1, 1, 1, 1, -1, 2, 1, -2, -3, 6, 1, -3, -20, 45, 24, 1, -4, -63, 1600, 4725, 120, 1, -5, -144, 14553, 1408000, -4465125, 720, 1, -6, -275, 72576, 50426145, -17346560000, -46414974375, 5040, 1, -7, -468, 257125, 694987776, -33198052560...
[ "sign", "tabl" ]
A375299
[ 1, 3, 1, 4, 23, 51, 20, 115, 5568, 12, 3521, 40, 1058, 2104, 668, 7540, 1298, 83648, 16631833, 70630 ]
[ "nonn", "more" ]
A279122
[ 1, 3, 12, 360, 181440, 1814400, 34214400, 130767436800, 10461394944000, 457312407552000, 3649353012264960000, 562000363888803840000, 3.4090571523804365e+21, 5.444434725209176e+27, 1.5244417230585694e+29, 1.8946632843727934e+31 ]
[ "nonn", "easy", "frac" ]
A226181
[ 3, 5, 7, 11, 13, 17, 19, 23, 29, 37, 41, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 113, 131, 137, 139, 149, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 227, 233, 239, 257, 263, 269, 271, 281, 293, ...
[ "nonn", "easy" ]
A123749
[ 1, 11, 35, 965, 8755, 8783, 237449, 2138185, 6415985, 519743405, 4677875401, 14033861347, 378916960525, 3410263045325, 3410267502725, 30692424759805, 276231889624955, 828695755304725, 67124359204727820, 604119244624305000 ]
[ "nonn", "frac", "easy" ]
A036382
[ 21, 33, 35, 39, 65, 69, 75, 77, 87, 91, 93, 105, 129, 133, 135, 141, 143, 145, 147, 155, 159, 161, 165, 175, 177, 183, 189, 195, 203, 217, 259, 261, 265, 267, 273, 275, 279, 285, 287, 291, 295, 297, 299, 301, 303, 305, 309, ...
[ "nonn" ]
A287876
[ 0, 1, 2, 3, 5, 6, 8, 30, 31, 32, 33, 35, 36, 38, 50, 51, 52, 53, 55, 56, 58, 60, 61, 62, 63, 65, 66, 68, 80, 81, 82, 83, 85, 86, 88, 100, 101, 102, 103, 105, 106, 108, 130, 131, 132, 133, 135, 136, 138, 150, 151, 1...
[ "nonn", "word" ]
A065148
[ 15, 20, 35, 95, 104, 143, 207, 255, 287, 319, 323, 464, 539, 650, 890, 899, 1023, 1034, 1199, 1295, 1349, 1407, 1519, 1763, 1952, 2015, 2204, 2834, 2975, 3599, 4031, 4454, 4607, 5183, 6479, 9215, 9503, 9799, 10403, 11339, 11663, 12095...
[ "nonn" ]
A344625
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 6, 7, 11, 12, 1, 10, 7, 11, 10, 17, 12, 18, 16, 12, 15, 19, 13, 25, 20, 17, 22, 29, 6, 25, 20, 22, 20, 28, 16, 31, 21, 14, 23, 33, 15, 24, 22, 25, 28, 30, 8, 31, ...
[ "nonn" ]
A007702
[ 6, 15015, 33426748355, 1.3576560199749675e+27, 7.105630242567996e+54 ]
[ "nonn" ]
A052109
[ 1, 1, 2, 5, 12, 30, 73, 178, 434, 1058, 2580, 6291, 15341, 37408, 91217, 222427, 542374, 1322546, 3224947, 7863835, 19175478, 46758223, 114017050, 278023561, 677943348, 1653123143, 4031039074, 9829440768, 23968486545, 58445679752, 142516194140, 347516970...
[ "easy", "nonn", "nice" ]
A014122
[ 0, 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 25, 26, 28, 29, 31, 33, 35, 37, 41, 43, 47, 49, 55, 59, 61, 63, 65, 67, 73, 77, 79, 80, 82, 83, 85, 89, 91, 97, 101, 113, 115, 119, 125, 127, 129, 131, 137, ...
[ "nonn" ]
A248569
[ 3, 3, 2, 9, 4, 6, 0, 4 ]
[ "nonn", "cons", "hard" ]
A340455
[ 1, -1, 2, 0, 0, 0, 2, -2, 2, 1, 0, 0, 1, -2, 2, 0, 2, 0, 2, -2, 0, 0, 0, 2, 2, -2, 2, 0, -1, 0, 4, -2, 2, -1, 0, 0, 0, 0, 2, 0, 2, 0, 2, -2, 2, 0, -2, 0, 2, -2, 2, 2, 0, 0, 2, -2, 2, 1, 2, -2, 0, ...
[ "sign" ]
A242341
[ 1, 6, 20, 29, 35, 40, 79, 164, 185, 198, 201, 218, 248, 249, 251, 264, 267, 274, 305, 323, 339, 344, 350, 362, 432, 539 ]
[ "nonn", "more", "hard" ]
A240459
[ 32, 1583, 65723, 2501883, 92193017, 3337483054, 119643524281, 4265146133201, 151546630250473, 5374173813805185, 190357922342008540, 6737907461668482000, 238393662801305200000, 8.432427442592588e+21, 2.9822406349259727e+23 ]
[ "nonn" ]
A387056
[ 1, 2, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 64, 68, 72, 76, 80, 88, 92, 96, 100, 104, 112, 116, 124, 128, 136, 144, 148, 152, 160, 164, 172, 176, 184, 188, 192, 196, 200, 208, 212, 224, 232, 236, 240, 2...
[ "nonn", "easy" ]
A083306
[ 1, 13, 232, 4671, 104308, 2560625, 68622228, 1995651019, 62652143668, 2113523516277, 76295945312500, 2936332651924343, 120077491457688940, 5201749713019677000, 238048808542004670000, 1.1479213178778076e+22, 5.81942186746563e+23, 3.0948666430186885e+25 ]
[ "easy", "nonn" ]
A333387
[ 1, 2, 4, 6, 9, 9, 16, 20, 21, 19, 28, 30, 41, 33, 48, 56, 49, 45, 64, 70, 83, 57, 64, 108, 85, 83, 90, 112, 105, 103, 136, 144, 141, 99, 186, 150, 169, 129, 218, 260, 181, 175, 196, 190, 251, 129, 136, 312, 217, 175, ...
[ "nonn" ]
A050362
[ 1, 1, 1, 1, 2, 1, 2, 2, 1, 3, 1, 2, 1, 4, 2, 3, 2, 5, 2, 1, 4, 1, 4, 2, 6, 3, 2, 5, 1, 4, 3, 8, 4, 2, 6, 2, 6, 1, 4, 10, 4, 5, 1, 4, 3, 8, 2, 8, 2, 5, 12, 4, 6, 1, 2, 6, 4, 10, 3, 10, 2, 6, 15...
[ "nonn" ]
A239183
[ 264, 29380, 1876940, 127574544, 9704723126, 733415243746, 54936152600716, 4111287727512886, 307924773739171140, 23065243594034127000, 1.7276305710379358e+21, 1.2940309186227449e+23 ]
[ "nonn" ]
A172432
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26 ]
[ "dead" ]
A323909
[ 0, 1, 2, 5, 1, 0, 7, 3, 2, 5, 0, 1, 5, 2, 6, 4, 1, 0, 7, 3, 0, 1, 2, 5, 7, 3, 1, 0, 3, 7, 8, 17, 2, 5, 0, 1, 5, 2, 6, 4, 0, 1, 2, 5, 1, 0, 7, 3, 5, 2, 6, 4, 2, 5, 0, 1, 6, 4, 5, 2, 4, 6, 22, ...
[ "nonn" ]
A359090
[ 1, -1, 2, 4, 6, 8, 14, 30, 48, 62, 126, 160, 350, 510, 1022, 2046, 1024, 4095, 4094, 13310, 28672, 32768, 65534, 180224, 262142, 360448, 262143, 2097151, 3276800, 4194302, 2097150, 33554432, 16777214, 66715648, 33554430, 184549374, 134217728, ...
[ "sign" ]
A285305
[ 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0...
[ "nonn", "easy" ]
A258315
[ 1, 2, 8, 46, 304, 2178, 16456, 129086, 1041248, 8582274, 71964232, 611954286, 5264786448, 45741886786, 400776143752, 3537136653566, 31417018218688, 280616550025218, 2518975669228936, 22712641808517170, 205612543320237820, 1868112977079278600, 17028815533533596000 ]
[ "nonn" ]
A381615
[ 1, 1, 4, 31, 320, 3969, 56080, 876204, 14860614, 270231265, 5223002719, 106613106181, 2287120272173, 51367948203527, 1204141944566399, 29385603693050270, 744943334951904500, 19580887642660810000, 532781828387893500000, 1.4984377196395037e+22 ]
[ "nonn" ]
A019198
[ 0, 1, 2, 6, 6, 34, 48, 104, 256, 792, 1424, 3820, 9176, 24331, 55108, 148909, 365414, 962722, 2413464, 6452068, 16545824, 44105799, 115223284, 308754511, 814697208, 2187677942, 5824197548, 15672459560, 41939621146 ]
[ "nonn", "more" ]
A309163
[ 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0...
[ "nonn" ]
A188969
[ 2, 4, 5, 9, 10, 11, 12, 13, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 34, 37, 48, 53, 54, 57, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 82, 83, 84, 85, 87, 88, 91, 96, 97, 10...
[ "nonn" ]
A206579
[ 2, 3, 7, 13, 43, 94, 133, 211, 244, 478, 604, 886, 1279, 1516, 1726, 3004, 3271, 3436, 4111, 4846, 4999, 6484, 6694, 7606, 9739, 10399, 10774, 12919, 13126, 15031, 16699, 17599, 17614, 18379, 19231, 25516, 25939, 32839, 32971, 39526, 40...
[ "nonn" ]
A332662
[ 0, 0, 0, 1, 1, 0, 2, 0, 0, 2, 1, 1, 2, 1, 3, 0, 4, 0, 5, 0, 0, 3, 1, 2, 2, 2, 3, 1, 4, 1, 5, 1, 6, 0, 7, 0, 8, 0, 9, 0, 0, 4, 1, 3, 2, 3, 3, 2, 4, 2, 5, 2, 6, 1, 7, 1, 8, 1, 9, 1, 10, 0, 11, ...
[ "nonn" ]
A349972
[ 0, 1, 2, 3, 2, 8, 10, 25, 49, 93, 187, 377, 747, 1472, 2975, 5911, 11880, 23734, 47474, 94885, 190623, 380805, 763402, 1528095, 3061916, 6125358, 12278446, 24564954, 49200792, 98478615, 197164774, 394536002, 789993459, 1580640910, 3163602123, 633...
[ "nonn" ]
A265774
[ 3, 19, 53, 61, 197, 211, 443, 491, 839, 1051, 1249, 1427, 3701, 17351, 22247, 53569, 61927, 128033 ]
[ "nonn", "frac", "more" ]