id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A242700
[ 1, 1, 2, 3, 5, 7, 11, 15, 22, 30, 42, 56, 77, 101, 135, 176, 231, 297, 385, 480, 616, 772, 970, 1205, 1502, 1848, 2282, 2792, 3415, 4151, 5046, 6091, 7356, 8838, 10601, 12673, 15129, 17991, 21372, 25311, 29977, 35359, 41669, 49004, 57536, 67448, 78935, 92247 ]
[ "nonn" ]
A326186
[ 0, 1, 2, 0, 4, 5, 6, 0, 0, 9, 10, 8, 12, 13, 14, 0, 16, 9, 18, 16, 20, 21, 22, 16, 0, 25, 0, 24, 28, 29, 30, 0, 32, 33, 34, 0, 36, 37, 38, 32, 40, 41, 42, 40, 36, 45, 46, 32, 0, 25, 50, 48, 52, 27, 54, 48, 56, 57, 58, 56, 60, 61, 54, 0, 64, 65, 66, 64, 68, 69, 70, 0, 72, 73, 50, 72, 76, 77, 78, 64, 0, 81, 82, 80, 84 ]
[ "nonn" ]
A169224
[ 1, 19, 342, 6156, 110808, 1994544, 35901792, 646232256, 11632180608, 209379250944, 3768826516992, 67838877305856, 1221099791505408, 21979796247097344, 395636332447752200, 7121453984059539000 ]
[ "nonn" ]
A211759
[ 36, 154, 600, 2160, 7520, 25300, 83944, 275424, 896780, 2930032, 9514764, 31283068, 102154068, 339451248, 1118239532, 3758067700, 12492423608, 42409118936, 142090246012, 486328578676, 1639690884804, 5647319658404, 19130793115084 ]
[ "nonn" ]
A320495
[ 1, 4, 6, 12, 14, 19, 22, 28, 32, 34, 39, 44, 46, 52, 54, 58, 62, 69, 69, 75, 77, 82, 87, 93, 92, 98, 100, 107, 111, 117, 114, 122, 123, 132, 134, 140, 137, 146, 148, 156, 157, 163, 160, 171, 172, 180, 179, 187, 183, 196, 195, 203, 202, 211, 208, 220, 218, 226 ]
[ "nonn" ]
A374287
[ -1, 65, 62, 90, 103, 136, 200, 276, 376, 481, 625, 806, 975, 1183, 1415, 1688, 1989, 2325, 2698, 3110, 3563, 4059, 4600, 5188, 5825, 6513, 7254, 8050, 8903, 9815, 10788, 11824, 12925, 14093, 15330, 16638, 18019, 19475, 21008, 22620, 24313, 26089, 27950, 29898 ]
[ "sign" ]
A284043
[ 41, 41, 122, 162, 299, 326, 326, 1064, 1064, 1064, 1064, 1064, 5664, 5664, 5664, 5664, 9265, 9265, 9265, 22818, 22818, 37784, 37784, 47494, 100202, 100202, 100202, 167628, 167628, 167628, 167628, 167628, 167628, 167628, 167628, 176956, 176956, 176956, 1081297 ]
[ "nonn" ]
A046152
[ 2, 3, 7, 9, 21, 13, 43, 33, 55, 41, 111, 49, 157, 85, 121, 129, 273, 109, 343, 161, 253, 221, 507, 193, 501, 313, 487, 337, 813, 241, 931, 513, 661, 545, 841, 433, 1333, 685, 937, 641, 1641, 505, 1807, 881, 1081, 1013, 2163, 769, 2059, 1001 ]
[ "nonn" ]
A096507
[ 1, 2, 6, 8, 9, 11, 20, 23, 41, 63, 66, 119, 122, 149, 252, 284, 305, 592, 746, 875, 1204, 1364, 2240, 2403, 5106, 5776, 5813, 12456, 14235, 39606, 55544, 84239, 275922 ]
[ "nonn" ]
A054578
[ 1, 3, 6, 12, 21, 35, 56, 90, 139, 215, 316, 462, 667, 961, 1358, 1918, 2665, 3693, 5034, 6844, 9187, 12365, 16416, 21786, 28707, 37721, 49082, 63920, 82639, 106721, 136674, 174894, 222557, 283107, 357726, 451574, 567535, 712855, 890404, 1112080, 1382415 ]
[ "nonn" ]
A165034
[ 0, 1, 1, 1, 1, 2, 1, 2, 0, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 2, 2, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 2, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 0, 1, 1, 1, 1, 1, 2, 1, 2, 2, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 2, 1, 2, 1, 0, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 2 ]
[ "base", "nonn" ]
A165229
[ 1, 6, 66, 756, 8676, 99576, 1142856, 13116816, 150544656, 1727834976, 19830751776, 227602011456, 2612239626816, 29981263453056, 344101723675776, 3949333103390976, 45327386898637060, 520232644163298800, 5970827408567763000, 68528533037833370000, 786517432002593800000 ]
[ "nonn", "easy" ]
A187438
[ 3022484, 3319295436, 3677337022406, 4086873166309438, 4538075433355554000 ]
[ "nonn" ]
A005270
[ 1, 1, 1, 2, 6, 27, 177, 1680, 23009, 455368, 13067353, 546378617, 33472296082, 3021920660821, 404374532614122, 80646410554881100, 24095492607316136000, 1.0837141045948365e+22, 7.36925274859079e+24, 7.60660349118574e+27 ]
[ "nonn" ]
A077706
[ 7, 77, 1771, 171787, 67168717, 12627718796, 29877182671336, 67791327481261384, 138429890716735750000, 2.81843257499274e+23, 1.0484569178972992e+26, 4.971782704668993e+29 ]
[ "base", "nonn" ]
A361043
[ 1, 2, 1, 3, 2, 1, 4, 4, 2, 1, 5, 8, 8, 2, 1, 6, 16, 32, 22, 2, 1, 7, 32, 128, 170, 72, 2, 1, 8, 64, 512, 1366, 992, 254, 2, 1, 9, 128, 2048, 10922, 16512, 6008, 926, 2, 1, 10, 256, 8192, 87382, 261632, 215766, 37130, 3434, 2, 1, 11, 512, 32768, 699050, 4196352, 6643782, 2973350, 232562, 12872, 2, 1 ]
[ "nonn", "tabl" ]
A309124
[ 1, 2, 0, 1, 7, 5, -1, 0, 7, 13, 3, 1, 15, 9, -3, -2, 16, 23, 5, 11, 23, 13, -9, -11, 20, 34, 14, 8, 38, 26, -4, -3, 17, 35, -1, 6, 44, 26, -2, 4, 46, 58, 16, 6, 48, 26, -20, -22, 21, 52, 16, 30, 84, 64, 4, -2, 34, 64, 6, -6, 56, 26, -16, -15, 69, 89, 23, 41, 85, 49, -21, -14, 60, 98, 36 ]
[ "sign" ]
A174648
[ 1, 3, 6, 11, 17, 24, 32, 42, 53, 66, 80, 95, 111, 128, 147, 168, 190, 213, 237, 263, 290, 319, 349, 380, 413, 447, 482, 519, 557, 596, 636, 677, 719, 762, 808, 855, 903, 954, 1007, 1061, 1116, 1172, 1229, 1287, 1346, 1407, 1469, 1534, 1600, 1667, 1736, 1806 ]
[ "nonn" ]
A379585
[ 1, 0, 1, 3, 7, 3, 7, 13, 125, 53, 125, 107, 179, 107, 179, 349, 493, 53, 69, 65, 81, 65, 81, 79, 1991, 1591, 43357, 40657, 51457, 40657, 51457, 102239, 123839, 102239, 123839, 123239, 144839, 123239, 144839, 142139, 163739, 142139, 163739, 158339, 160739, 139139 ]
[ "nonn", "easy", "frac" ]
A355254
[ 1, 2, 7, 29, 142, 785, 4813, 32240, 233449, 1812161, 14980768, 131174939, 1211111629, 11745451658, 119255234371, 1264050651953, 13952113296766, 160006824960725, 1902825936046105, 23423342243273696, 297982102750214600, 3911917977005948400, 52926119656555820000 ]
[ "nonn" ]
A025785
[ 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 8, 8, 9, 9, 10, 11, 11, 12, 12, 13, 13, 14, 15, 16, 17, 17, 18, 18, 19, 20, 21, 22, 23, 24, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39 ]
[ "nonn" ]
A205357
[ 770, 8948, 107330, 1329947, 16820450, 216561893, 2826905666, 37314167621, 496830187346, 6659987446001, 89739370179794, 1213940517313589, 16470111480319490, 223953891638398100, 3050276653364209700 ]
[ "nonn" ]
A138693
[ 114, 119, 135, 159, 231, 279, 399, 471, 639, 951, 1071, 1479, 1791, 1959, 2319, 2919, 3591, 3831, 4599, 5151, 5439, 6351, 6999, 8031, 9519, 10311, 10719, 11559, 11991, 12879, 16239, 17271, 18879, 19431, 22311, 22911, 24759, 26679, 27999, 30039 ]
[ "nonn", "easy", "less" ]
A386106
[ 3, 11, 13, 31, 41, 43, 61, 113, 131, 163, 311, 313, 331, 431, 433, 443, 461, 463, 613, 631, 641, 643, 661, 1163, 1361, 1433, 1613, 1663, 3163, 3313, 3331, 3343, 3361, 3413, 3433, 3461, 3463, 3613, 3631, 3643, 4111, 4133, 4363, 4441, 4463, 4643, 4663, 6113, 6131 ]
[ "nonn", "base", "easy" ]
A099160
[ 2, 3, 5, 7, 11, 29, 53, 61, 89, 127, 131, 149, 163, 233, 271, 353, 379, 397 ]
[ "nonn", "more" ]
A186786
[ 0, 580, 580, 2366, 11354, 2366, 22236, 63504, 63504, 22236, 118616, 739334, 696596, 739334, 118616, 891506, 8499038, 17120960, 17120960, 8499038, 891506, 5489048, 97501656, 281080458, 658080772, 281080458, 97501656, 5489048, 38326452 ]
[ "nonn", "tabl" ]
A096413
[ 5, 8, 4, 9, 7, 7, 1, 6, 2, 2, 1, 4, 2, 3, 2, 5, 4, 2, 2, 3, 8, 4, 2, 2, 9, 7, 7, 3, 7, 1, 0, 0, 3, 2, 2, 2, 9, 0, 1, 9, 6, 7, 1, 8, 4, 9, 2, 4, 3, 5, 4, 2, 9, 9, 6, 2, 3, 5, 0, 9, 2, 1, 1, 7, 2, 0, 9, 8, 2, 9, 7, 7, 7, 5, 4, 4, 6, 8, 4, 1, 1, 1, 8, 5, 1, 5, 4, 7, 9, 2, 5, 7, 2, 6, 0, 3, 6, 4, 4, 6, 1, 9, 1, 9, 1 ]
[ "cons", "nonn" ]
A111502
[ 33, 48, 203, 6648, 27048, 63293, 80288, 168348, 194298, 201178, 218888, 280103, 310828, 313668, 315448, 341893, 375298, 405958, 440643, 479668, 520058, 611868, 615893, 628068, 632533, 666973, 812888, 882728, 883643, 941143, 950983, 971158 ]
[ "nonn" ]
A025326
[ 209, 297, 306, 314, 321, 326, 329, 342, 425, 426, 434, 441, 458, 459, 489, 497, 513, 530, 531, 534, 542, 546, 558, 561, 593, 602, 605, 633, 649, 650, 657, 659, 662, 665, 674, 675, 678, 681, 693, 698, 699, 705, 706, 713, 714, 725, 737, 738, 741, 746, 747, 750, 755, 758 ]
[ "nonn" ]
A046155
[ 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15 ]
[ "nonn" ]
A122816
[ 3, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 5, 5, 6, 5, 6, 6, 5, 7, 5, 7, 5, 7, 6, 6, 5, 7, 6, 7, 7, 5, 7, 6, 5, 8, 6, 7, 5, 6, 8, 7, 5, 7, 5, 7, 6, 6, 5, 8, 7, 5, 8, 8, 6, 5, 8, 7, 5, 6, 8, 7, 5, 7, 5, 8, 5, 6, 6, 7, 7, 5, 8, 6, 5, 8, 6, 8, 5, 8, 7, 7, 6, 9, 5, 5, 7, 7, 5, 8, 6, 5, 5, 5, 7, 7, 6, 9, 8, 6, 7, 5, 9 ]
[ "nonn" ]
A321582
[ 241, 421, 541, 571, 751, 1171, 1291, 1621, 1861, 2011, 2221, 2251, 2341, 2521, 2671, 2851, 2971, 3271, 3361, 3391, 3541, 3571, 3691, 4021, 4201, 4591, 4621, 4861, 5641, 5701, 5821, 6211, 6961, 7321, 7351, 7591, 7951, 8101, 8161, 8191, 8221, 8821, 8971, 9151, 9241, 9421 ]
[ "nonn" ]
A274270
[ 1, 9, 47, 154, 274, 120, -120, 240, -720, 2880, -14400, 86400, -604800, 4838400, -43545600, 435456000, -4790016000, 57480192000, -747242496000, 10461394944000, -156920924160000, 2510734786560000, -42682491371520000, 768284844687360000, -14597412049059840000 ]
[ "sign", "easy" ]
A017837
[ 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 2, 1, 0, 0, 1, 3, 3, 1, 0, 1, 4, 6, 4, 1, 1, 5, 10, 10, 5, 2, 6, 15, 20, 15, 7, 8, 21, 35, 35, 22, 15, 29, 56, 70, 57, 37, 44, 85, 126, 127, 94, 81, 129, 211, 253, 221, 175, 210, 340, 464, 474, 396, 385, 550, 804, 938, 870, 781, 935, 1354, 1742, 1808, 1651, 1716, 2289, 3096 ]
[ "nonn", "easy" ]
A332820
[ 1, 6, 8, 14, 15, 20, 26, 27, 33, 35, 36, 38, 44, 48, 50, 51, 58, 63, 64, 65, 68, 69, 74, 77, 84, 86, 90, 92, 93, 95, 106, 110, 112, 117, 119, 120, 122, 123, 124, 125, 141, 142, 143, 145, 147, 156, 158, 160, 161, 162, 164, 170, 171, 177, 178, 185, 188, 196, 198, 201, 202, 208, 209, 210, 214, 215, 216, 217, 219, 221, 225 ]
[ "nonn" ]
A260820
[ 0, 1, 2, 4, 5, 6, 7, 9, 11, 15, 27 ]
[ "fini", "full", "nonn" ]
A062490
[ 1, 1, 1, 2, 3, 4, 5, 6, 7, 9, 11, 12, 14, 16, 18, 21, 23, 25, 28, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 61, 64, 68, 71, 75, 78, 82, 86, 90, 94, 98, 102, 106, 110, 114, 119, 123, 127, 132, 136, 141, 145, 150, 154, 159, 164, 169, 174, 178, 183, 188, 193, 198, 204 ]
[ "nonn" ]
A277813
[ 1, 2, 1, 3, 2, 1, 4, 5, 3, 2, 6, 1, 7, 8, 4, 9, 5, 3, 10, 2, 11, 12, 6, 1, 13, 14, 7, 15, 8, 4, 16, 17, 9, 5, 18, 3, 19, 20, 10, 2, 21, 22, 11, 23, 12, 6, 24, 1, 25, 26, 13, 27, 14, 7, 28, 29, 15, 8, 30, 4, 31, 32, 16, 33, 17, 9, 34, 5, 35, 36, 18, 3, 37, 38, 19, 39, 20, 10, 40, 2, 41, 42, 21, 43, 22, 11, 44, 45, 23, 12, 46, 6, 47, 48, 24, 1, 49, 50 ]
[ "nonn", "base" ]
A204779
[ 537665796, 465761252736, 387664140116880, 323760110018338560, 270709468240858640000, 2.261951613140625e+23, 1.8902884121804427e+26, 1.5796708990303732e+29 ]
[ "nonn" ]
A278814
[ 1, 2, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18 ]
[ "nonn", "easy" ]
A363756
[ 0, 0, 0, 1, 0, 1, 0, 3, 1, 1, 0, 5, 0, 1, 1, 7, 0, 5, 0, 5, 1, 1, 0, 13, 1, 1, 3, 5, 0, 7, 0, 13, 1, 1, 1, 17, 0, 1, 1, 13, 0, 7, 0, 5, 5, 1, 0, 28, 1, 5, 1, 5, 0, 13, 1, 13, 1, 1, 0, 24, 0, 1, 5, 23, 1, 7, 0, 5, 1, 7, 0, 40, 0, 1, 5, 5, 1, 7, 0, 28, 7, 1, 0, 24, 1, 1, 1 ]
[ "nonn", "easy" ]
A168999
[ 1, 34, 1122, 37026, 1221858, 40321314, 1330603362, 43909910946, 1449027061218, 47817893020194, 1577990469666402, 52073685498991260, 1718431621466711800, 56708243508401490000, 1.8713720357772491e+21, 6.175527718064922e+22 ]
[ "nonn" ]
A119288
[ 1, 1, 1, 1, 1, 3, 1, 1, 1, 5, 1, 3, 1, 7, 5, 1, 1, 3, 1, 5, 7, 11, 1, 3, 1, 13, 1, 7, 1, 3, 1, 1, 11, 17, 7, 3, 1, 19, 13, 5, 1, 3, 1, 11, 5, 23, 1, 3, 1, 5, 17, 13, 1, 3, 11, 7, 19, 29, 1, 3, 1, 31, 7, 1, 13, 3, 1, 17, 23, 5, 1, 3, 1, 37, 5, 19, 11, 3, 1, 5, 1, 41, 1, 3, 17, 43, 29, 11, 1, 3, 13, 23 ]
[ "nonn" ]
A100665
[ 0, 1, 1, 1, 2, 2, 3, 4, 5, 6, 7, 9, 12, 15, 19, 25, 31, 40, 51, 65, 82, 105, 133, 169, 215, 274, 348, 443, 564, 717, 912, 1160, 1476, 1877, 2388, 3038, 3864, 4915, 6252, 7953, 10116, 12868, 16368, 20821, 26484, 33688, 42852, 54509, 69336, 88197, 112189, 142706 ]
[ "nonn" ]
A049090
[ 11, 31, 127, 277, 709, 1063, 1787, 2221, 3001, 4397, 5381, 7193, 8527, 9319, 10631, 12763, 15299, 15823, 19577, 21179, 22093, 24859, 27457, 30133, 33967, 37217, 38833, 40819, 42043, 43651, 52711, 55351, 57943, 60647, 66851, 68639, 72727 ]
[ "nonn" ]
A050197
[ 1, 3, 4, 7, 5, 9, 19, 6, 11, 16, 21, 8, 13, 49, 18, 23, 41, 10, 46, 15, 51, 20, 56, 25, 43, 61, 12, 48, 66, 17, 53, 71, 22, 40, 58, 27, 94, 45, 63, 14, 130, 50, 68, 117, 37, 135, 55, 73, 24, 91, 42, 60, 109, 29, 127, 96, 47, 65, 114, 83, 34 ]
[ "nonn" ]
A017192
[ 256, 214358881, 25600000000, 500246412961, 4347792138496, 23811286661761, 96717311574016, 318644812890625, 899194740203776, 2252292232139041, 5132188731375616, 10828567056280800, 21435888100000000, 40213853471634240 ]
[ "nonn", "easy" ]
A060223
[ 1, 1, 1, 4, 18, 108, 778, 6756, 68220, 787472, 10224702, 147512052, 2340963570, 40527565260, 760095923082, 15352212731820, 332228417589720, 7668868648772700, 188085259069430750, 4884294069438337000, 133884389812214100000, 3.86308690469067e+21 ]
[ "easy", "nonn" ]
A171401
[ 0, 1, 4, 6, 9, 10, 12, 16, 18, 21, 22, 25, 28, 30, 33, 36, 40, 42, 45, 46, 49, 52, 57, 58, 60, 65, 66, 69, 70, 72, 75, 77, 78, 81, 82, 88, 96, 100, 102, 105, 106, 108, 112, 119, 123, 125, 126, 129, 130, 136, 138, 145, 148, 150, 153, 156, 161, 162, 165, 166, 169, 172 ]
[ "base", "nonn" ]
A151900
[ 19, 24, 53, 59, 67, 68, 73 ]
[ "hard", "more", "nonn" ]
A014893
[ 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, -1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
[ "sign" ]
A288230
[ 1, 3, 5, 9, 18, 36, 71, 138, 268, 522, 1017, 1980, 3853, 7498, 14594, 28406, 55287, 107604, 209428, 407608, 793325, 1544042, 3005154, 5848902, 11383662, 22155913, 43121842, 83927627, 163347533, 317921733, 618768013, 1204302235, 2343921860, 4561952576 ]
[ "nonn", "easy" ]
A017264
[ 16777216, 6975757441, 208827064576, 2251875390625, 14048223625216, 62259690411361, 218340105584896, 645753531245761, 1677721600000000, 3936588805702081, 8507630225817856, 17181861798319200, 32784148919812096 ]
[ "nonn", "easy" ]
A291024
[ 0, 4, 8, 24, 64, 172, 456, 1200, 3136, 8148, 21064, 54216, 139008, 355196, 904840, 2298720, 5825408, 14729636, 37168008, 93612408, 235369664, 590852172, 1481051720, 3707411472, 9268764096, 23145174388, 57732471752, 143857070376, 358113876352, 890666303260 ]
[ "nonn", "easy" ]
A298126
[ 1, 4, 14, 16, 49, 56, 64, 86, 106, 196, 224, 256, 301, 344, 371, 424, 454, 526, 622, 686, 784, 886, 896, 1024, 1154, 1204, 1376, 1484, 1589, 1696, 1816, 1841, 1849, 2104, 2177, 2279, 2386, 2401, 2488, 2744, 2809, 2846, 3101, 3136, 3238, 3544, 3584, 3986, 4039 ]
[ "nonn" ]
A048405
[ 2, 3, 5, 7, 19, 191, 919, 919191919, 91919191919, 91919191919191920, 9.191919191919192e+22, 1.9191919191919192e+32 ]
[ "nonn", "base" ]
A267320
[ 0, 1, 11, 2, 12, 112, 3, 13, 113, 23, 4, 14, 33, 24, 124, 5, 15, 115, 25, 125, 44, 6, 16, 116, 26, 45, 145, 36, 7, 17, 55, 27, 127, 255, 37, 137, 8, 18, 47, 28, 128, 247, 38, 57, 157, 9, 19, 119, 29, 67, 167, 39, 139, 457, 239, 49, 77, 68, 168, 277, 59, 159, 377, 259, 78, 178, 69, 169, 1169 ]
[ "base", "easy", "nonn" ]
A308410
[ 1, 1, 3, 2, 5, 6, 10, 10, 20, 18, 33, 35, 55, 59, 92, 97, 146, 161, 231, 251, 363, 393, 551, 609, 828, 924, 1240, 1382, 1824, 2055, 2665, 3004, 3870, 4359, 5551, 6280, 7910, 8957, 11201, 12683, 15728, 17857, 21951, 24939, 30472, 34625, 42031, 47803, 57677 ]
[ "nonn", "easy" ]
A250377
[ 424, 16798, 202184, 1340867, 6202712, 22517208, 68640720, 183349893, 441598504, 978524338, 2024486872, 3954455687, 7355653592, 13117987436, 22552473504, 37543583241, 60742198824, 95806676806, 147700371688, 223054869835 ]
[ "nonn" ]
A389477
[ 11, 41, 59, 953 ]
[ "nonn", "hard", "more" ]
A279769
[ 11, 21, 22, 31, 32, 33, 41, 42, 43, 44, 51, 52, 53, 54, 55, 61, 62, 63, 64, 65, 66, 71, 72, 73, 74, 75, 76, 77, 81, 82, 83, 84, 85, 86, 87, 88, 91, 92, 93, 94, 95, 96, 97, 98, 99, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 121, 122, 131, 132, 133, 141 ]
[ "nonn", "base" ]
A035753
[ 1, 512, 44032, 1549824, 30316544, 387328512, 3575055360, 25537728000, 148348809216, 727126954496, 3093172083712, 11673741260288, 39773478832128, 124061810555392, 358342294418432, 967507857612288, 2460955893981184, 5936073260900864, 13653945217715200, 30091563817059840 ]
[ "nonn", "easy" ]
A155632
[ 1, 8, 106, 1268, 14386, 160028, 1767466, 19470788, 214293346, 2357685548, 25936376026, 285307476308, 3138411599506, 34522645035068, 379749565147786, 4177247095673828, 45949725568604860, 505447011319424600, 5559917244772754000, 61159090173536640000, 672749993833048400000 ]
[ "nonn", "easy" ]
A249356
[ 1, 17, 33, 49, 65, 97, 129, 161, 193, 241, 289, 337, 385, 449, 513, 577, 641, 721, 801, 881, 961, 1057, 1153, 1249, 1345, 1457, 1569, 1681, 1793, 1921, 2049, 2177, 2305, 2449, 2593, 2737, 2881, 3041, 3201, 3361, 3521, 3697, 3873, 4049, 4225, 4417, 4609, 4801 ]
[ "nonn", "easy" ]
A070647
[ 3, 5, 7, 5, 7, 11, 13, 11, 17, 7, 19, 13, 23, 17, 11, 19, 29, 31, 13, 23, 37, 11, 41, 17, 43, 29, 13, 31, 47, 19, 53, 37, 23, 59, 17, 61, 41, 43, 19, 67, 47, 71, 13, 29, 73, 31, 79, 53, 23, 83, 59, 89, 61, 37, 17, 97, 67, 101, 29, 41, 103, 19, 71, 107, 43, 31, 109, 73, 17 ]
[ "easy", "nonn" ]
A104648
[ 1, 1, 1, 2, 2, 3, 4, 4, 5, 7, 8, 9, 11, 13, 15, 18, 20, 24, 28, 31, 36, 41, 47, 52, 60, 68, 76, 86, 96, 108, 121, 134, 150, 168, 185, 204, 228, 254, 279, 308, 339, 377, 411, 453, 496, 541, 597, 653, 713, 782, 851, 928, 1013, 1105, 1200, 1299, 1420, 1540, 1674, 1812, 1960 ]
[ "nonn" ]
A298485
[ 1, 2, -1, 2, 1, -1, 2, 3, 0, -1, 2, 5, 3, -1, -1, 2, 7, 8, 2, -2, -1, 2, 9, 15, 10, 0, -3, -1, 2, 11, 24, 25, 10, -3, -4, -1, 2, 13, 35, 49, 35, 7, -7, -5, -1, 2, 15, 48, 84, 84, 42, 0, -12, -6, -1, 2, 17, 63, 132, 168, 126, 42, -12, -18, -7, -1, 2, 19, 80, 195, 300, 294, 168, 30, -30, -25, -8, -1 ]
[ "sign", "tabl" ]
A089341
[ 6, 12, 15, 18, 24, 35, 36, 45, 48, 54, 72, 75, 77, 91, 96, 108, 135, 143, 144, 162, 175, 187, 192, 209, 216, 221, 225, 245, 247, 288, 299, 323, 324, 375, 384, 391, 405, 432, 437, 486, 493, 527, 539, 551, 576, 589, 637, 648, 667, 675, 703, 713, 768, 847, 851 ]
[ "nonn" ]
A156081
[ 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 7, 7, 7, 7, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 12, 12, 12, 12, 12, 12, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21 ]
[ "nonn" ]
A066629
[ 1, 2, 5, 8, 15, 24, 41, 66, 109, 176, 287, 464, 753, 1218, 1973, 3192, 5167, 8360, 13529, 21890, 35421, 57312, 92735, 150048, 242785, 392834, 635621, 1028456, 1664079, 2692536, 4356617, 7049154, 11405773, 18454928, 29860703, 48315632, 78176337, 126491970, 204668309 ]
[ "easy", "nonn" ]
A159959
[ 1, 3, 0, 2, 5, 4, 6, 7, 8, 10, 12, 14, 9, 11, 13, 15, 17, 19, 16, 21, 23, 18, 25, 20, 27, 22, 29, 24, 26, 28, 31, 30, 32, 34, 33, 36, 38, 40, 42, 35, 44, 37, 39, 46, 41, 48, 50, 52, 43, 45, 54, 56, 58, 60, 47, 62, 64, 66, 49, 51, 68, 53, 70, 72, 55, 57, 74, 76 ]
[ "easy", "nonn" ]
A252137
[ 1864, 8684, 62277, 409028, 2670175, 17562129, 115183261, 755607636, 4967204787, 32613906904, 214022771560, 1405186467767, 9227158423609, 60580408167599, 397722666714982, 2611240940819477, 17144272724693612, 112560751779945150 ]
[ "nonn" ]
A044446
[ 4, 20, 36, 52, 84, 100, 116, 132, 148, 164, 180, 196, 212, 228, 244, 340, 356, 372, 388, 404, 420, 436, 452, 468, 484, 500, 516, 532, 548, 564, 596, 612, 628, 644, 660, 676, 692, 708, 724, 740, 756, 772, 788, 804, 820, 852, 868, 884, 900, 916, 932, 948, 964 ]
[ "nonn", "base" ]
A170462
[ 1, 21, 420, 8400, 168000, 3360000, 67200000, 1344000000, 26880000000, 537600000000, 10752000000000, 215040000000000, 4300800000000000, 86016000000000000, 1720320000000000000, 34406400000000000000 ]
[ "nonn" ]
A345433
[ 1, 3, 7, 12, 22, 30, 49, 66, 91, 114, 160, 189, 253, 300, 355, 420, 529, 597, 733, 819, 931, 1053, 1252, 1365, 1564, 1737, 1945, 2121, 2437, 2604, 2965, 3222, 3511, 3813, 4147, 4398, 4912, 5292, 5701, 6039, 6670, 7011, 7705, 8160, 8638, 9201, 10030, 10479, 11272, 11856, 12568, 13212, 14266 ]
[ "nonn" ]
A193352
[ 0, 2, 8, 50, 416, 5616, 117308, 4862736, 435732112, 89647085656 ]
[ "nonn", "hard", "more" ]
A358273
[ 2, 1, 1, 1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 11, 9, 12, 14, 16, 17, 18, 19, 20, 21, 21, 21, 21, 21, 24, 26, 27, 28, 29, 30, 31, 32, 32, 33, 33, 31, 34, 36, 38, 39, 40, 41, 41, 41, 41, 44, 46, 48, 49, 51, 52, 53, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80 ]
[ "base", "easy", "nonn" ]
A155345
[ 1, 7, 19, 52, 193, 781, 3781, 20901, 131341, 1017012, 9065243, 91925870 ]
[ "nonn" ]
A040469
[ 22, 5, 1, 1, 10, 1, 1, 5, 44, 5, 1, 1, 10, 1, 1, 5, 44, 5, 1, 1, 10, 1, 1, 5, 44, 5, 1, 1, 10, 1, 1, 5, 44, 5, 1, 1, 10, 1, 1, 5, 44, 5, 1, 1, 10, 1, 1, 5, 44, 5, 1, 1, 10, 1, 1, 5, 44, 5, 1, 1, 10, 1, 1, 5, 44, 5, 1, 1, 10, 1, 1, 5, 44, 5, 1, 1, 10, 1, 1, 5, 44, 5, 1, 1 ]
[ "nonn", "cofr", "easy", "less" ]
A017475
[ 343, 5832, 24389, 64000, 132651, 238328, 389017, 592704, 857375, 1191016, 1601613, 2097152, 2685619, 3375000, 4173281, 5088448, 6128487, 7301384, 8615125, 10077696, 11697083, 13481272, 15438249, 17576000, 19902511, 22425768, 25153757, 28094464, 31255875, 34645976, 38272753, 42144192 ]
[ "nonn", "easy" ]
A006641
[ 1, 1, 1, 1, 1, 2, 1, 2, 3, 2, 3, 2, 4, 2, 1, 5, 2, 2, 4, 4, 3, 1, 4, 7, 5, 3, 4, 6, 2, 2, 8, 5, 6, 3, 8, 2, 6, 10, 4, 2, 5, 5, 4, 4, 3, 10, 2, 7, 6, 4, 10, 1, 8, 11, 4, 5, 8, 4, 2, 13, 4, 9, 4, 3, 6, 14, 4, 7, 5, 4, 12, 2 ]
[ "nonn", "easy", "nice" ]
A131272
[ 1, 37, 7187, 3140407, 4986959, 5139161, 751213639, 163007938237, 5134788477263, 36197588005399, 940901369608517 ]
[ "nonn" ]
A097344
[ 1, 5, 29, 103, 887, 1517, 18239, 63253, 332839, 118127, 2331085, 4222975, 100309579, 184649263, 1710440723, 6372905521, 202804884977, 381240382217, 13667257415003, 25872280345103, 49119954154463, 93501887462903, 4103348710010689, 7846225754967739, 75162749477272140 ]
[ "easy", "nonn", "frac" ]
A332984
[ 6, 10, 36, 105, 528, 595, 861, 903, 1081, 1128, 1225, 1431, 1711, 2016, 2211, 2278, 2415, 2556, 2926, 3160, 3403, 3741, 4005, 4095, 5050, 5151, 5253, 6105, 6441, 6903, 7750, 8385, 10011, 11476, 12720, 14196, 15400, 15931, 16836, 17391, 18528, 19110 ]
[ "nonn", "easy" ]
A340934
[ 1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 8, 13, 8, 1, 1, 21, 51, 51, 21, 1, 1, 55, 187, 268, 187, 55, 1, 1, 144, 662, 1277, 1277, 662, 144, 1, 1, 377, 2291, 5719, 7611, 5719, 2291, 377, 1, 1, 987, 7808, 24550, 41593, 41593, 24550, 7808, 987, 1, 1, 2584, 26353, 102299, 214085, 271091 ]
[ "nonn" ]
A247184
[ 0, 0, 1, 2, 4, 7, 11, 15, 20, 26, 32, 40, 48, 57, 65, 73, 81, 90, 98, 106, 114, 123, 132, 147, 157, 170, 190, 202, 223, 236, 251, 270, 291, 314, 338, 361, 380, 398, 421, 443, 471, 495, 520, 544, 567, 592, 616, 639, 663, 692, 720, 749, 781, 819, 852, 885, 913, 948, 987, 1023, 1055, 1088 ]
[ "nonn" ]
A159921
[ 1, 36, 238, -67608, -3189300, 171302256, 23038278216, -258048705312, -179911241858928, -4292680465160640, 1558578348234929400, 101525379857857040000, -1.4483821141875256e+22, -1.810383783782862e+24, 1.3403665976916923e+26, 3.1640724357081846e+28 ]
[ "sign", "frac" ]
A283211
[ 1, 10, 100, 1010, 10100, 101010, 1000100, 10101010, 100110100, 1000001010, 11111000100, 100100101010, 1111010010100, 10001100101010, 111000010000100, 1000111111101010, 11100001110110100, 110011101010001010, 1001000111001000100, 10110110000000100000 ]
[ "nonn", "easy" ]
A224396
[ 16384, 10000000, 279128617, 2780848289, 17642791909, 90682660877, 424124440444, 1895527656502, 8186764103582, 33998418651060, 134714450368164, 506671733476920, 1805110329656189, 6093246282673576, 19519515186829600 ]
[ "nonn" ]
A001502
[ 12, 90, 12000000000000 ]
[ "word", "nonn", "bref" ]
A338843
[ 0, 1, 3, 5, 4, 2, 6, 8, 10, 9, 7, 11, 29, 12, 28, 13, 27, 14, 26, 15, 25, 16, 24, 17, 23, 18, 22, 19, 21, 20, 40, 41, 39, 30, 31, 33, 35, 34, 32, 36, 44, 37, 43, 38, 42, 46, 45, 49, 47, 51, 48, 50, 54, 52, 56, 53, 55, 59, 57, 61, 58, 60, 80, 64, 76, 65, 75, 66, 74, 67, 73, 68, 72, 69, 71, 70, 78, 62 ]
[ "nonn", "look", "base" ]
A216218
[ 1, 1, 1, 0, 2, 0, 0, 2, 2, 0, 0, 0, 4, 0, 0, 0, 0, 4, 4, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 8, 8, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 0, 16, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
[ "nonn", "tabl" ]
A069976
[ 60, 90, 108, 120, 129, 135, 140, 144, 147, 150, 152, 154, 156, 158, 159, 160, 161, 162, 163, 164, 164, 165, 166, 166, 167, 167, 168, 168, 168, 169, 169, 169, 170, 170, 170, 171, 171, 171, 171, 171, 172, 172, 172, 172, 172, 173, 173, 173, 173, 173, 173, 173, 173, 174 ]
[ "easy", "nonn" ]
A331544
[ 2, 7, 13, 19, 31, 41, 59, 71, 83, 101, 109, 131, 139, 151, 163, 179, 193, 199, 223, 229, 241, 257, 269, 281, 311, 337, 349, 373, 383, 401, 421, 433, 443, 461, 487, 503, 523, 547, 563, 571, 593, 601, 613, 619, 641, 659, 677, 709, 727, 739, 757, 773, 797, 811, 823 ]
[ "nonn" ]
A099624
[ 0, 0, 1, 9, 58, 318, 1591, 7503, 33976, 149436, 643261, 2724357, 11395654, 47210154, 194121811, 793526571, 3228811492, 13090123272, 52917410041, 213437246145, 859342367890, 3455021317590, 13875655896751, 55677180731079 ]
[ "easy", "nonn" ]
A263911
[ 14112, 151930944, 1207439092800, 8931773538545760, 64912419951251554000, 4.696815393566964e+23, 3.39469559528739e+27, 2.4528928458505095e+31, 1.7722557907411213e+35 ]
[ "nonn" ]
A099086
[ 1, 1, 5, 53, 1078, 37622, 2018305, 152233518, 15150569446 ]
[ "nonn" ]
A290750
[ 3, 7, 24, 76, 272, 948, 3496, 12920, 48792, 185912, 716472, 2781600, 10878640, 42789292, 169181280, 671865840, 2678679360, 10716650484, 43007271768, 173072547360, 698235684336, 2823329204964, 11439823954664, 46440709197120, 188856966713360, 769241291697640, 3137871076653336, 12817512478814400 ]
[ "nonn" ]
A178785
[ 60, 6552, 222768, 288288, 87360, 49585536, 25486965504, 203558400, 683289600, 556121548800 ]
[ "nonn", "more" ]
A329262
[ 23, 37, 53, 67, 83, 97, 113, 127, 263, 277, 293, 307, 353, 367, 383, 397, 443, 457, 563, 577, 593, 607, 743, 757, 773, 787, 863, 877, 953, 967, 983, 997, 1103, 1117, 1223, 1237, 1283, 1297, 1433, 1447, 1553, 1567, 1583, 1597, 1613, 1627 ]
[ "nonn", "tabf" ]