id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A373807
[ 2, 4, 8, 10, 13, 15, 17, 23, 25, 27, 37, 41, 46, 48, 50, 52, 55, 57, 60, 62, 64, 74, 76, 79, 81, 83, 88, 90, 92, 94, 97, 99, 115, 117, 119, 124, 129, 133, 138, 141, 153, 156, 163, 166, 171, 173, 175, 179, 181, 183, 2...
[ "nonn" ]
A192018
[ 1, 3, 2, 1, 6, 6, 5, 3, 1, 11, 13, 14, 12, 10, 5, 1, 19, 24, 30, 31, 31, 28, 19, 7, 1, 32, 42, 56, 66, 74, 78, 77, 61, 32, 9, 1, 53, 71, 98, 124, 152, 175, 196, 203, 180, 118, 49, 11, 1, 87, 118, 166, 218, 284,...
[ "nonn", "tabf" ]
A100589
[ 13, 31, 47, 61, 107, 151, 173, 197, 211, 227, 283, 347, 383, 433, 541, 557, 607, 647, 673, 691, 751, 773, 827, 853, 883, 977, 991, 1031, 1091, 1201, 1303, 1373, 1627, 1741, 1783, 1907, 1933, 1997, 2029, 2161, 2207, 2269, 2297, 231...
[ "nonn" ]
A215494
[ 7, 21, 70, 245, 882, 3234, 12005, 44933, 169099, 638666, 2417807, 9167018, 34790490, 132119827, 501941055, 1907443237, 7249766678, 27557748813, 104759610858, 398257159370, 1514069805269, 5756205681709, 21884262613787, 83201447389466, 316323894905207 ]
[ "nonn", "easy", "changed" ]
A244104
[ 1, 0, 0, 0, 0, 0, 0, 429, 1430, 3432, 7072, 13260, 23256, 38760, 1447686, 9241353, 61760336, 263673564, 1154175880, 4037346170, 14498731260, 58819097610, 288661103640, 1967198408955, 12613467934524, 82682367942144, 480369377259200, 2684682541268112 ]
[ "nonn" ]
A346999
[ 1, 1, 1, 2, 4, 10, 27, 83, 281, 1035, 4127, 17656, 80598, 390649, 2001779, 10804600, 61230207, 363291235, 2251035412, 14533496547, 97575061512, 679975389773, 4910327064257, 36688562599092, 283236504667511, 2256366104654141, 18526697776919184, 156616975726597630 ...
[ "nonn" ]
A329058
[ 1, 2, 1, 7, 6, 3, 30, 36, 32, 16, 143, 220, 275, 250, 125, 728, 1365, 2184, 2808, 2592, 1296, 3876, 8568, 16660, 27440, 36015, 33614, 16807, 21318, 54264, 124032, 248064, 417792, 557056, 524288, 262144, 120175, 346104, 908523, 2133054, ...
[ "nonn", "tabl" ]
A175591
[ 0, 2, 1, 6, 0, 6, 5, 6, 14, 6, 4, 24, 6, 2, 6, 13, 28, 2, 27, 30, 6, 1, 32, 12, 6, 60, 30, 36, 6, 28, 36, 40, 29, 72, 6, 10, 93, 6, 62, 36, 48, 9, 78, 84, 32, 6, 28, 52, 39, 132, 6, 112, 6, 34, 96, 90, 7,...
[ "nonn" ]
A387312
[ 0, 3, 7, 6, 14, 13, 13, 12, 28, 31, 27, 26, 26, 25, 25, 24, 56, 59, 63, 62, 54, 53, 53, 52, 52, 55, 51, 50, 50, 49, 49, 48, 112, 115, 119, 118, 126, 125, 125, 124, 108, 111, 107, 106, 106, 105, 105, 104, 104, 107, 11...
[ "nonn", "changed" ]
A262636
[ 1, 409, 88469, 3499607, 525755773, 1889074241401, 14476124563693172, 3690382506839632000, 944489835647492600000, 1.7945058791198906e+22, 1.7982782151774688e+24, 1.7136765345945337e+28, 3.9126270988987385e+31 ]
[ "nonn", "base" ]
A001956
[ 4, 8, 12, 17, 21, 25, 30, 34, 38, 43, 47, 51, 55, 60, 64, 68, 73, 77, 81, 86, 90, 94, 98, 103, 107, 111, 116, 120, 124, 129, 133, 137, 141, 146, 150, 154, 159, 163, 167, 172, 176, 180, 185, 189, 193, 197, 202, 206, 210, ...
[ "nonn" ]
A245840
[ 1, 0, 2, 1, 1, 3, 0, 2, 2, 4, 1, 2, 4, 3, 5, 0, 4, 4, 6, 4, 6, 1, 3, 8, 7, 8, 5, 7, 0, 4, 8, 12, 10, 10, 6, 8, 1, 4, 13, 14, 17, 13, 12, 7, 9, 0, 6, 12, 22, 20, 22, 16, 14, 8, 10, 1, 5, 18, 25, 32, ...
[ "nonn", "tabl" ]
A203286
[ 4, 12, 28, 57, 104, 176, 280, 425, 620, 876, 1204, 1617, 2128, 2752, 3504, 4401, 5460, 6700, 8140, 9801, 11704, 13872, 16328, 19097, 22204, 25676, 29540, 33825, 38560, 43776, 49504, 55777, 62628, 70092, 78204, 87001, 96520, 106800, 117880, ...
[ "nonn" ]
A209520
[ 1, 6, 2027, 27323948, 16484968944748, 258381047085271680000 ]
[ "nonn" ]
A349026
[ 1, 2, 3, 5, 6, 7, 10, 11, 12, 13, 14, 15, 17, 18, 19, 21, 22, 23, 26, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 46, 47, 51, 53, 55, 57, 58, 59, 60, 61, 62, 65, 66, 67, 69, 70, 71, 73, 74, 75, 77, ...
[ "nonn" ]
A312518
[ 1, 4, 8, 14, 18, 23, 26, 32, 34, 42, 45, 49, 57, 54, 66, 62, 76, 76, 80, 91, 82, 100, 90, 110, 107, 111, 125, 110, 134, 118, 144, 138, 142, 159, 138, 168, 146, 178, 169, 173, 193, 166, 202, 174, 212, 200, 204, 227, 194, ...
[ "nonn" ]
A015469
[ 0, 1, 1, 12, 133, 16105, 1963358, 2595689713, 3480804151551, 50586130104323470, 746191869036731000000, 1.1928019486798416e+26, 1.9354414621214346e+31, 3.403205102300481e+37 ]
[ "nonn", "easy" ]
A041892
[ 21, 22, 43, 65, 173, 238, 411, 649, 27669, 28318, 55987, 84305, 224597, 308902, 533499, 842401, 35914341, 36756742, 72671083, 109427825, 291526733, 400954558, 692481291, 1093435849, 46616786949, 47710222798, 94327009747, 142037232545, 378401474837 ]
[ "nonn", "cofr", "frac", "easy", "less" ]
A140375
[ 23, 101, 127, 179, 257, 283, 439, 491, 569, 647, 673, 751, 829, 881, 907, 1063, 1193, 1297, 1427, 1453, 1531, 1583, 1609, 1973, 1999, 2129, 2207, 2311, 2389, 2441, 2467, 2753, 2857, 2909, 3169, 3221, 3299, 3533, 3559, 3637, 3767, 3793...
[ "nonn", "easy" ]
A234754
[ 1014, 26642, 646036, 15939010, 392044622, 9648827736, 237446135146, 5843394219306, 143801532689336, 3538850266550630, 87088497253969900, 2143183802626938000, 52742175287648020000, 1.2979460994171297e+21 ]
[ "nonn" ]
A073935
[ 1, 2, 4, 6, 8, 16, 18, 20, 32, 42, 54, 64, 100, 128, 162, 256, 272, 294, 342, 486, 500, 512, 1024, 1458, 1806, 2048, 2058, 2500, 4096, 4374, 4624, 6498, 8192, 10100, 12500, 13122, 14406, 16384, 26406, 32768, 39366, 62500, 65536, 6...
[ "nonn" ]
A078535
[ 1, 6, 162, 5760, 232254, 10077696, 458960580, 21634449408, 1046465787510, 51644846702592, 2590092194793948, 131621703842267140, 6762649550214036000, 350714987252652440000, 1.833438844103602e+22, 9.651480075536987e+23, 5.111674284687758e+25 ]
[ "nonn" ]
A134889
[ 1, 2, 3, 4, 5, 5, 7, 6, 6, 7, 11, 8, 13, 9, 8, 10, 17, 11, 19, 12, 10, 13, 23, 14, 10, 15, 12, 16, 29, 17, 31, 18, 14, 19, 12, 20, 37, 21, 16, 22, 41, 23, 43, 24, 18, 25, 47, 26, 14, 27, 20, 28, 53, 29, 16, ...
[ "nonn", "easy" ]
A306053
[ 1, 2, 2, 4, 8, 4, 8, 21, 21, 8, 16, 49, 45, 49, 16, 32, 120, 142, 142, 120, 32, 64, 293, 439, 458, 439, 293, 64, 128, 719, 1261, 1962, 1962, 1261, 719, 128, 256, 1774, 3826, 6604, 12349, 6604, 3826, 1774, 256, 512, 4389, 1...
[ "nonn", "tabl" ]
A176873
[ 3, 3, 3, 3, 3, 4, 3, 3, 4, 3, 3, 3, 3, 3, 4, 3, 3, 4, 3, 4, 3, 3, 3, 5, 3, 3, 4, 3, 3, 3, 3, 3, 4, 5, 3, 4, 3, 3, 3, 3, 4, 4, 3, 3, 4, 3, 3, 5, 3, 3, 4, 3, 4, 4, 4, 3, 3, 3, 3, 4, 3, 3, 7, 5...
[ "nonn" ]
A167424
[ 0, 1, 5, 89, 24305, 1664474849, 7382162541380960000, 1.3956691551760281e+38, 4.842694621642673e+76 ]
[ "nonn", "frac" ]
A370848
[ 13, 17, 31, 71, 113, 1151, 11131, 112111, 113111, 131111, 1111211, 1111711, 11111117, 11111171, 71111111, 115111111, 1111111121, 1111115111, 1115111111, 1117111111, 1151111111, 1711111111, 11111111113, 11113111111, 31111111111, 111113111111, 111511111111, 111117...
[ "nonn", "base" ]
A071475
[ 1, 0, 0, 1, 2, 2, 3, 4, 4, 5, 1, 1, 6, 3, 2, 2, 3, 4, 1, 5, 6, 6, 7, 3, 8, 2, 1, 1, 10, 7, 6, 6, 7, 5, 5, 4, 1, 10, 8, 2, 6, 6, 12, 4, 4, 5, 11, 15, 2, 2, 1, 8, 5, 4, 10, 5, 6, 2, 7, 8, 1, 1, ...
[ "nonn", "look" ]
A130845
[ 0, 0, 0, 1, 1, 1, 1, 3, 2, 2, 2, 5, 3, 3, 3, 7, 4, 4, 4, 9, 5, 5, 5, 11, 6, 6, 6, 13, 7, 7, 7, 15, 8, 8, 8, 17, 9, 9, 9, 19, 10, 10, 10, 21, 11, 11, 11, 23, 12, 12, 12, 25, 13, 13, 13, 27, 14, 14, 14,...
[ "nonn" ]
A274660
[ 1, -1, 3, 1, 5, -1, 7, 1, -3, 9, -1, 11, 1, 13, -1, 3, -5, 15, 1, 17, -1, 19, 1, -3, -7, 21, -1, 23, 1, 5, 25, -1, 3, -9, 27, 1, 29, -1, 31, 1, -3, -11, 33, -1, -5, 7, 35, 1, 37, -1, 3, -13, 39, 1, 41, -1, ...
[ "sign", "easy", "tabf" ]
A316329
[ 3, 312, 312112, 31211211112, 31211211112111112000, 3.1211211112111113e+36, 3.121121111211111e+69 ]
[ "nonn" ]
A095045
[ 0, 1, 3, 30, 37, 50, 55, 76, 98, 117, 129, 133, 157, 189, 199, 222, 293, 299 ]
[ "fini", "full", "nonn" ]
A197415
[ 0, 5, 8, 7, 7, 5, 0, 5, 6, 2, 2, 4, 6, 2, 9, 9, 5, 0, 9, 7, 7, 6, 4, 4, 1, 4, 2, 2, 4, 2, 5, 9, 4, 8, 4, 2, 4, 0, 9, 2, 7, 7, 4, 9, 0, 1, 9, 2, 7, 3, 1, 7, 9, 3, 6, 4, 3, 0, 6, 4, 7, 4, 3, 2...
[ "nonn", "cons" ]
A326649
[ 0, 1, 4, 19, 81, 413, 2439, 14655, 86844, 573196, 4224230, 32280154, 249433713, 1925416359, 15732592327, 139542345546, 1304524118159, 12445507282579, 119198874300879, 1137647406084952, 11183828252431176, 116368970786569600, 1278400213028604200 ]
[ "nonn" ]
A175617
[ 9, 8, 2, 6, 8, 4, 2, 7, 7, 7, 4, 2, 1, 9, 2, 5, 1, 8, 3, 2, 4, 4, 7, 5, 9, 1, 6, 2, 5, 7, 1, 3, 6, 3, 7, 3, 5, 1, 4, 8, 2, 8, 9, 9, 8, 4, 4, 9, 1, 9, 5, 5, 5, 1, 7, 9, 1, 6, 9, 3, 3, 9, 6, 5...
[ "cons", "easy", "nonn" ]
A058221
[ 2, 5, 15, 17, 17, 83, 173, 357, 629, 179, 2543, 8067, 5619, 29027, 38783, 99267 ]
[ "nonn", "hard", "more" ]
A212778
[ 56, 252, 1134, 5104, 22972, 103391, 465336, 2094360, 9426184, 42424863, 190943548, 859388488, 3867889651, 17408390437, 78350750657, 352636859298, 1587129076523, 7143265484325, 32150026443551, 144699115914141, 651254025656788 ]
[ "nonn" ]
A290431
[ 1, 2, 4, 5, 7, 16, 31, 34, 44, 68, 145, 158, 227, 499, 643, 970, 1004, 1951, 2923, 3092, 28069, 48334, 76262 ]
[ "nonn", "more", "hard" ]
A245606
[ 1, 2, 3, 4, 5, 6, 9, 10, 7, 8, 15, 16, 11, 26, 21, 22, 13, 12, 27, 28, 25, 36, 81, 82, 19, 14, 45, 52, 125, 56, 39, 40, 29, 18, 33, 46, 17, 126, 99, 100, 31, 50, 51, 226, 41, 626, 129, 130, 89, 24, 63, 34, 35, ...
[ "nonn" ]
A016057
[ 171, 513, 1539, 3249, 4617, 9747, 13203, 13851, 29241, 39609, 41553, 61731, 87723, 97641, 118827, 124659, 185193, 250857, 263169, 292923, 354537, 356481, 373977, 555579, 752571, 789507, 878769, 1063611, 1069443, 1121931, 1172889, 1666737, 1855179, 21...
[ "nonn" ]
A266582
[ 1, 2, 4, 9, 13, 14, 16, 46, 99, 112, 116, 127, 146, 208, 512, 848, 1132, 2167, 2482, 2666, 3625, 14410, 16567, 21529, 26272, 69554, 69602 ]
[ "nonn", "more" ]
A312241
[ 1, 4, 8, 14, 15, 24, 23, 34, 34, 42, 40, 50, 52, 60, 57, 68, 67, 76, 80, 88, 80, 96, 96, 102, 103, 112, 109, 120, 124, 134, 122, 140, 142, 144, 145, 160, 151, 162, 170, 178, 164, 186, 186, 188, 187, 204, 197, 204, 214, ...
[ "nonn" ]
A343991
[ 0, 0, 0, 1, 0, 0, 0, 0, 2, 2, 0, 0, 2, 0, 0, 8, 0, 4, 0, 12 ]
[ "nonn", "more" ]
A370419
[ 1, 0, 1, 0, 1, 1, 0, 3, 2, 1, 0, 15, 8, 3, 1, 0, 105, 48, 15, 4, 1, 0, 945, 384, 105, 24, 5, 1, 0, 10395, 3840, 945, 192, 35, 6, 1, 0, 135135, 46080, 10395, 1920, 315, 48, 7, 1, 0, 2027025, 645120, 135135, 23040, 346...
[ "nonn", "tabl" ]
A264602
[ 1, 1, 0, 0, 8, 40, 136, 392, 1032, 3912 ]
[ "nonn", "more" ]
A381203
[ 2, 3, 2, 5, 6, 7, 6, 6, 10, 11, 6, 13, 14, 15, 4, 17, 6, 19, 10, 21, 22, 23, 6, 10, 26, 3, 14, 29, 30, 31, 10, 33, 34, 35, 6, 37, 38, 39, 30, 41, 42, 43, 22, 30, 46, 47, 12, 14, 10, 51, 26, 53, 6, 55, 42, 5...
[ "nonn", "easy" ]
A180407
[ 113, 131, 179, 191, 199, 311, 313, 337, 353, 373, 733, 739, 797, 919, 937, 971, 991, 1031, 1033, 1091, 1097, 1103, 1109, 1181, 1301, 1439, 1471, 1499, 1741, 1811, 1901, 1949, 3011, 3169, 3301, 3343, 3347, 3389, 3433, 3583, 3853, 7187,...
[ "nonn", "base" ]
A080013
[ 1, 0, 0, 1, 1, 1, 1, 3, 3, 4, 6, 9, 12, 16, 24, 33, 46, 64, 91, 127, 177, 249, 349, 489, 684, 960, 1345, 1884, 2640, 3700, 5185, 7264, 10180, 14265, 19989, 28009, 39249, 54999, 77067, 107992, 151326, 212049, 297136, 416368, 5834...
[ "nonn" ]
A046605
[ 6, 6, 11, 12, 11, 16, 23, 23, 16, 21, 39, 46, 39, 21, 26, 12, 17, 17, 12, 26, 31, 86, 29, 34, 29, 86, 31, 36, 117, 231, 63, 63, 231, 117, 36, 41, 153, 348, 546, 126, 546, 348, 153, 41, 46, 194, 501, 894, 1176, 1176, ...
[ "tabf", "less", "nonn" ]
A371192
[ 0, 0, 1, 1, 4, 2, 5, 3, 12, 6, 9, 5, 16, 8, 13, 11, 32, 13, 21, 21, 28, 16, 21, 34, 44, 20, 29, 27, 40, 55, 37, 89, 80, 26, 43, 29, 60, 144, 61, 37, 76, 233, 53, 377, 64, 48, 91, 610, 112, 42, 65, 56, 84, 987, ...
[ "nonn" ]
A192247
[ 0, 4, 14, 54, 159, 439, 1111, 2671, 6136, 13616, 29346, 61742, 127262, 257742, 514102, 1011862, 1968265, 3788845, 7225565, 13664305, 25645120, 47799824, 88535124, 163043324, 298669724, 544451624, 988021646, 1785478726, 3214039171 ]
[ "nonn" ]
A249444
[ 13, 137, 251, 353, 2213, 4933, 24421, 78137, 148933, 205441, 371311, 493121, 524309, 571873, 912773, 1225153, 1594339, 4330913, 7189253, 13652161, 18191713, 21254213, 28629187, 31855333, 42508901, 49431233, 73560481, 81183173, 99253313, 178454113, 18422058...
[ "nonn" ]
A333460
[ 8, 172, 1864, 9396, 28188, 72688, 153240, 269680, 500344, 795344, 1158752, 1820428, 2506948, 3477052, 4772708, 6313892, 8116916, 10200156, 13320308, 16199876, 20189488, 24692976, 28950448, 36096712, 41795388, 49216724, 58997920 ]
[ "nonn", "more" ]
A314338
[ 1, 5, 7, 14, 15, 23, 26, 31, 35, 36, 43, 45, 54, 57, 61, 64, 65, 73, 76, 85, 87, 90, 93, 95, 104, 107, 115, 116, 119, 123, 126, 135, 137, 144, 145, 149, 154, 157, 165, 166, 173, 175, 180, 185, 187, 194, 195, 203, 206, ...
[ "nonn" ]
A095153
[ 35, 1225, 24990, 426650, 6779185, 104394675, 1585021340, 23909487700, 359582866335, 5400330984125, 81051093085690, 1216089331752750, 18243600636165484, 273669834496409570, 4105158293128058000, 61578149829707540000, 923677675484159700000 ]
[ "easy", "nonn" ]
A355520
[ 2, 4, 8, 16, 32, 62, 116, 206, 350, 566, 886, 1334, 1974, 2846, 3978, 5472, 7398, 9854, 12964, 16804, 21524 ]
[ "nonn", "more" ]
A340754
[ 0, 0, 0, 0, 0, 1, 0, 3, 1, 4, 2, 11, 1, 18, 7, 14, 11, 39, 10, 54, 14, 40, 31, 94, 26, 99, 53, 101, 49, 185, 34, 225, 102, 162, 123, 220, 96, 378, 174, 269, 160, 511, 117, 588, 229, 354, 314, 764, 235, 747, 318, 60...
[ "nonn" ]
A159344
[ 1, 1, 1, 9, 237675, 777739016577752700 ]
[ "nonn", "hard", "more", "nice" ]
A207471
[ 42, 1764, 12994, 101233, 644401, 3205650, 16675001, 76629370, 345252578, 1534975920, 6569471819, 28198798691, 119211939368, 501052508853, 2103730122314, 8781162264514, 36654035342450, 152721010610871 ]
[ "nonn" ]
A075932
[ 31, 227, 805, 1354, 6182, 10315, 18731, 35149, 67943, 393255, 655433, 1181959, 6291497, 10485837, 18874658, 35653635, 69337155, 136446255, 270666054, 1610612779, 2684354638, 4831838504, 9126807585, 17716871269, 34896740609 ]
[ "nonn" ]
A334299
[ 1, 2, 2, 3, 2, 4, 4, 4, 2, 4, 3, 6, 4, 7, 6, 5, 2, 4, 4, 6, 4, 6, 7, 8, 4, 7, 6, 10, 6, 10, 8, 6, 2, 4, 4, 6, 3, 8, 8, 8, 4, 8, 4, 9, 8, 12, 11, 10, 4, 7, 8, 10, 8, 11, 12, 13, 6, 10, 9, 14, 8, ...
[ "nonn" ]
A174644
[ 0, 0, 0, 0, 0, 0, 0, 4, 40, 204, 708, 1968, 4712, 10064, 19656, 35744, 61328, 100272, 157424, 238736, 351384, 503888, 706232, 969984, 1308416, 1736624, 2271648, 2932592, 3740744, 4719696, 5895464, 7296608, 8954352, 10902704, 13178576, 15821904 ]
[ "nonn", "easy" ]
A087365
[ 1, 4, 999, 8448, 5265625, 48789998784, 11098889011, 29142024192, 18771463736417780, 0, 3.1671415677776513e+21 ]
[ "base", "nonn" ]
A096376
[ 2, 5, 12, 23, 38, 57, 80, 107, 138, 173, 212, 255, 302, 353, 408, 467, 530, 597, 668, 743, 822, 905, 992, 1083, 1178, 1277, 1380, 1487, 1598, 1713, 1832, 1955, 2082, 2213, 2348, 2487, 2630, 2777, 2928, 3083, 3242, 3405, 3572, 3743...
[ "easy", "nonn" ]
A313195
[ 1, 4, 9, 15, 19, 22, 28, 34, 38, 43, 46, 53, 59, 60, 64, 72, 78, 79, 87, 87, 97, 103, 101, 105, 116, 122, 120, 131, 128, 141, 147, 142, 146, 160, 166, 161, 175, 169, 185, 191, 183, 187, 204, 210, 202, 219, 210, 229, 235,...
[ "nonn" ]
A356345
[ 2, 32, 232, 1702, 8254, 54454, 226054, 1320004, 5744424, 29762704, 115825408, 683698168, 2451800168, 12480950168, 52811505368, 257779918358, 934525722158, 5063712283658, 17858697779258, 93122902514978, 362251839734978, 1645752207604178, 6009470493232178, 334199336238671...
[ "nonn" ]
A351724
[ 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 9, 13, 18, 24, 31, 42, 58, 80, 109, 146, 197, 268, 366, 499, 676, 916, 1243, 1690, 2299, 3122, 4237, 5751, 7811, 10614, 14418, 19580, 26587, 36106, 49043, 66614, 90473, 122869, 166866, 226632, 30781...
[ "nonn", "easy" ]
A185926
[ 3392, 130944, 5113920, 199644672, 7794298816, 304295071104, 11879903064384, 463800149161728, 18107098487806016, 706914428967789200, 27598458655461286000, 1.0774641022080995e+21, 4.206499014579186e+22 ]
[ "nonn" ]
A208840
[ 2, 4, 4, 6, 16, 6, 10, 36, 36, 9, 16, 100, 78, 81, 14, 26, 256, 282, 171, 196, 22, 42, 676, 768, 855, 406, 484, 35, 68, 1764, 2430, 2421, 3010, 990, 1225, 56, 110, 4624, 7086, 9801, 8736, 11242, 2485, 3136, 90, 178, 12100, ...
[ "nonn", "tabl" ]
A063536
[ 0, -1, -346, 0, -1, -41, 1, -1, -11, 3, -1, -4, 10, 0, -2, 36, 0, -1, 287, 0, -1, 1441871, 0, -1, -421, 0, -1, -45, 1, -1, -12, 3, -1, -5, 9, 0, -2, 33, 0, -1, 241, 0, -1, 180191, 0, -1, -518, 0, -1, -50, 1, -1, ...
[ "sign" ]
A024880
[ 0, 0, 1, 1, 0, 1, 1, 1, 1, 2, 2, 1, 2, 1, 2, 2, 2, 3, 3, 2, 2, 3, 2, 3, 3, 3, 2, 4, 4, 3, 4, 3, 4, 3, 3, 4, 4, 3, 4, 5, 5, 4, 5, 4, 4, 5, 3, 5, 5, 5, 4, 5, 5, 5, 6, 5, 5, 6, 6, 5, 5, 5, 6, 6...
[ "dead" ]
A203533
[ 1, 10, 840, 464100, 1481407200, 32851686067200, 5186361382800998000, 4.436556151786001e+24, 1.9667253420867342e+31, 6.058621713339805e+38, 1.3220738489819417e+47 ]
[ "nonn" ]
A112010
[ 24, 1064, 2592, 6520, 106434, 145166, 237165, 262535, 372780, 491520, 531765, 546410, 566250, 636352, 12716544, 12806910, 13666320, 15116832, 15408692, 17473715, 21645616, 23473515, 23726640, 23728264, 26722436, 26757024, 27933192, 30537364, 30869280, 321181...
[ "base", "nonn" ]
A152351
[ 1, 2, 6, 24, 120, 720, 4608, 33552, 268560, 2422112, 23438552, 249020004, 2851308552, 34918206024, 462267440708, 6449764752114 ]
[ "nonn" ]
A006659
[ 2, 12, 56, 240, 990, 4004, 16016, 63648, 251940, 994840, 3922512, 15452320, 60843510, 239519700, 942871200, 3711935040, 14615744220, 57562286760, 226760523600, 893550621600, 3522078700140, 13887053160552 ]
[ "nonn", "easy", "nice" ]
A338684
[ 1, 7, 82, 975, 15626, 275817, 5764802, 133561087, 3486981232, 99853521768, 3138428376722, 106947820494048, 3937376385699290, 155549105311903520, 6568409424129452000, 295137771929866800000, 1.4063084452067724e+22, 7.08228596784096e+23, 3.758997345754596e+25 ]
[ "nonn" ]
A334053
[ 2, 2, 2, 2, 2, 96, 6912, 960, 16256, 2013184, 235520, 61184, 125440, 992256, 155615232, 550207488, 12192710656 ]
[ "more", "nonn" ]
A145142
[ 1, 0, 1, 0, 1, 1, 0, 2, 3, 1, 24, 6, 11, 6, 1, 120, 144, 50, 35, 10, 1, 720, 1200, 634, 225, 85, 15, 1, 5040, 9960, 6804, 2464, 735, 175, 21, 1, 80640, 89040, 71868, 29932, 8449, 1960, 322, 28, 1, 1088640, 1231776, 789984,...
[ "nonn", "tabl" ]
A027598
[ 1, 6, 28, 120, 270, 496, 672, 1080, 1638, 1782, 3780, 8128, 18600, 20580, 24948, 26208, 30240, 32640, 32760, 35640, 41850, 44226, 55860, 66960, 164640, 167400, 185220, 199584, 273000, 293760, 401310, 441936, 446880, 502740, 523776, 614250, 7076...
[ "nonn" ]
A141761
[ 1, 1, 1, 2, 6, 26, 154, 1188, 11474, 134432, 1863168, 29936846, 548625820, 11315025894, 259733293774, 6574304470320, 182050022755386, 5477819548007438, 178054691097463360, 6220193033111607000 ]
[ "nonn" ]
A101513
[ 1, 2, 3, 4, 6, 8, 9, 10, 12, 14, 5, 7, 15, 16, 18, 20, 21, 22, 24, 25, 26, 11, 13, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 17, 19, 45, 46, 48, 49, 50, 51, 52, 23, 54, 55, 56, 57, 58, 60, 62, 63, 6...
[ "nonn", "tabl" ]
A308197
[ 1, 3, 4, 5, 8, 10, 11, 12, 13, 14, 16, 17, 18, 21, 23, 25, 27, 28, 29, 32, 34, 35, 36, 37, 38, 40, 41, 42, 44, 45, 47, 48, 49, 52, 54, 55, 56, 57, 58, 60, 61, 62, 65, 67, 69, 71, 72, 73, 76, 78, 79, 80, 82, 84,...
[ "nonn", "base" ]
A100428
[ 1, 2, 1, 1, 2, 2, 1, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 2, 1, 2...
[ "nonn", "easy" ]
A106532
[ 1, 2, 3, 5, 7, 11, 15, 16, 18, 20, 28, 45, 47, 50, 52, 78, 84, 109, 117, 134, 136, 139, 141, 283, 285, 311, 317, 342, 350, 367, 369, 372, 374, 893, 927, 943, 945, 948, 961, 977, 979, 982, 1356, 1361, 1971, 2490, 2524, 2540...
[ "nonn" ]
A135079
[ 1, 2, 8, 56, 704, 15392, 593408, 39691136, 4650143744, 944100803072, 334651494268928, 205435333440321540, 219775256161359230000, 4.0703455469406065e+23, 1.3122059668095017e+27 ]
[ "nonn", "easy" ]
A313895
[ 1, 5, 10, 16, 21, 27, 33, 37, 42, 47, 52, 58, 64, 70, 75, 80, 85, 89, 94, 100, 106, 112, 118, 123, 127, 132, 137, 142, 148, 154, 160, 165, 170, 175, 179, 185, 191, 196, 202, 207, 212, 217, 222, 228, 233, 239, 245, 249, 2...
[ "nonn" ]
A390689
[ 1, 3, 1, 7, 6, 3, 1, 15, 10, 18, 1, 7, 14, 3, 6, 31, 18, 30, 1, 42, 1, 3, 1, 15, 31, 42, 10, 7, 30, 18, 1, 63, 1, 54, 6, 70, 38, 3, 14, 90, 42, 3, 1, 7, 60, 3, 1, 31, 50, 93, 18, 98, 54, 30, 6, 15, 1, 9...
[ "nonn", "mult", "easy", "new" ]
A281657
[ 0, 2894, 104815, 2159590, 48871479, 955490042, 18092139475, 334914604224, 6058290906233, 107920205083282, 1899220467260750, 33088963050484264, 571760413613053100, 9811548539803376000, 167377398458564400000 ]
[ "nonn" ]
A288948
[ 1, 3, 359, 59088, 4824130496 ]
[ "nonn", "more" ]
A196973
[ 13, 275, 4800, 115563, 2246059, 47228658, 986337603, 20278906437, 420951074243, 8734501701701, 181050206799010, 3753750765133292, 77826189975568350, 1613547115315836700, 33453410187089875000, 693584699456224500000 ]
[ "nonn" ]
A337578
[ 1, 2, 26, 1756, 301140, 94035272, 45829458720, 31938032357440, 30067763435823664, 36733573872360060000, 5.650539530307421e+22, 1.0688590872121896e+26, 2.43929162811364e+29, 6.610855016445393e+32 ]
[ "nonn" ]
A107608
[ 1, 1, 25, 32, 125, 128, 441, 529, 729, 961, 1089, 1369, 2025, 2809, 3375, 4489, 4900, 4913, 9216, 10201, 10404, 12167, 16384, 17576, 18225, 20736, 27889, 31684, 34596, 35344, 38416, 38809, 39601, 40804, 46656, 47961, 60516, 61009, 63504, ...
[ "nonn" ]
A228735
[ 4, 16, 64, 232, 696, 2072, 6130, 18378, 55716, 169734, 517764, 1578184, 4806344, 14629384, 44519552, 135480532, 412314438, 1254882280, 3819338704, 11624541548, 35380360780, 107682931160, 327740673246, 997501106370, 3035962621026 ]
[ "nonn" ]
A205762
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[ "nonn" ]
A371126
[ 1, 3, 24, 470, 21432, 2213968, 509257232, 257475122096, 283161056661248, 671705854972452200, 3.413655802591871e+21, 3.6958970631216277e+25, 8.484413320346014e+29, 4.1129897405317523e+34, 4.1955863592692355e+39 ]
[ "nonn" ]
A355081
[ 1, 1, 4, 43, 1279, 108472, 26888677, 19761575473, 43356335678176, 284807217244068220, 5.608422162798705e+21, 3.312277917016026e+26, 5.8679652813856265e+31, 3.1185477505022556e+37 ]
[ "nonn" ]
A291392
[ 1, 10, 90, 765, 6264, 49968, 390960, 3013740, 22958640, 173225952, 1296640224, 9640743120, 71270772480, 524277204480, 3840015361536, 28018969060032, 203753553511680, 1477232299307520, 10681095982072320, 77040637862485250, 554445497303525400 ]
[ "nonn", "easy" ]
A227147
[ 1, 1, 3, 1, 2, 4, 3, 2, 3, 4, 2, 3, 5, 4, 4, 3, 4, 5, 4, 3, 4, 4, 5, 3, 4, 6, 5, 5, 5, 4, 5, 6, 5, 5, 4, 5, 5, 6, 5, 4, 5, 5, 5, 6, 4, 5, 7, 6, 6, 6, 6, 5, 6, 7, 6, 6, 6, 5, 6, 6, 7, 6, 6, 5...
[ "nonn", "tabf" ]
A130833
[ 97, 641, 706, 722, 2417, 2482, 2498, 3026, 3042, 3107, 3123, 14657, 14722, 14738, 15266, 15282, 15347, 15363, 17042, 17058, 17123, 17139, 17667, 17683, 17748, 17764, 28577, 28642, 28658, 29186, 29202, 29267, 29283, 30962, 30978, 31043, 31059, ...
[ "nonn", "easy" ]
A301634
[ 0, 1, 5, 13, 65, 85, 229, 2005, 3875, 3919, 5417, 8819, 11899, 16668, 19445, 28242, 33407, 37918, 40594, 141251 ]
[ "nonn", "more", "hard" ]