id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A194232
[ 2, 3, 3, 9, 7, 30, 8, 29, 11, 30, 17, 115, 17, 35, 69, 118, 24, 235, 28, 245, 119, 124, 100, 926, 70, 124, 77, 547, 788, 7420, 384, 3686, 78, 164, 397, 1853, 17, 59, 433, 3837, 1509, 14777, 204, 1897, 476, 185, 748, 7390, ...
[ "nonn", "base" ]
A212960
[ 0, 4, 16, 44, 92, 168, 276, 424, 616, 860, 1160, 1524, 1956, 2464, 3052, 3728, 4496, 5364, 6336, 7420, 8620, 9944, 11396, 12984, 14712, 16588, 18616, 20804, 23156, 25680, 28380, 31264, 34336, 37604, 41072, 44748, 48636, 52744, 57076 ]
[ "nonn", "easy" ]
A099030
[ 1, 3, 8, 38, 192, 1320, 10176, 91296, 908160, 9985920, 119761920, 1556847360, 21794734080, 326920043520, 5230700052480, 88921882828800, 1600593472880640, 30411275613143040, 608225502973132800, 12772735554075034000 ]
[ "nonn", "easy" ]
A355477
[ 0, 0, 1, 3, 4, 8, 9, 14, 16, 23, 25, 33, 36, 46, 49, 60, 64, 77, 81, 96, 100 ]
[ "nonn", "more" ]
A187919
[ 3, 32, 256, 1912, 13989, 101656, 737078, 5340368, 38683143, 280179632, 2029268236, 14697327880, 106447627113, 770962306792, 5583803916866, 40441487719712, 292903169916939, 2121392429130176, 15364483152682648, 111279430895716900, 805956934031993100, 5837256482937956000, 42...
[ "nonn", "easy" ]
A158929
[ 1, 2, 3, 4, 10, 5, 8, 7, 32, 13, 34, 15, 6, 12, 9, 48, 21, 11, 16, 14, 17, 42, 19, 170, 20, 43, 64, 46, 65, 47, 68, 58, 69, 59, 80, 62, 81, 63, 18, 255, 22, 51, 25, 60, 26, 192, 37, 195, 38, 204, 41, 207, 85, 3...
[ "base", "easy", "nonn" ]
A092025
[ 1, 44, 66, 398, 1582, 2484 ]
[ "nonn", "base", "more" ]
A319002
[ 1, 1, 1, 2, 1, 2, 1, 4, 2, 2, 1, 5, 1, 2, 2, 8, 1, 4, 1, 5, 2, 2, 1, 12, 2, 2, 4, 5, 1, 6, 1, 16, 2, 2, 2, 11, 1, 2, 2, 12, 1, 5, 1, 5, 4, 2, 1, 28, 2, 4, 2, 5, 1, 8, 2, 12, 2, 2, 1, 18, 1, 2, ...
[ "nonn" ]
A232046
[ 37, 426, 21680, 1060850, 55505057, 2882322121, 149582129861, 7766282047395, 403179428472169, 20931014633412316, 1086631809725472600, 56412330010727020000, 2.928639202177098e+21, 1.5203992388866197e+23 ]
[ "nonn" ]
A275994
[ 1, -1, 1, -17, 31, -691, 5461, -929569, 3202291, -221930581, 4722116521, -968383680827, 14717667114151, -2093660879252671, 86125672563201180, -129848163681107300000, 868320396104950900000, -2.0939061574764654e+23, 1.412965955074555e+25, -8.486725345098385e+27 ]
[ "frac", "sign" ]
A230171
[ 3, 193, 3787, 78849, 1637019, 33908253, 704822331, 14643857893, 304104787011, 6315931613849, 131183171878903, 2724650132436217, 56590036701710600, 1175359025263666000, 24411897444501280000, 507028430780683700000, 1.0530840582576109e+22, 2.1872266960233012e+23 ]
[ "nonn" ]
A288812
[ 1, 1, 5, 3, 27, 39, 87, 15, 495, 927, 1887, 3135, 7103, 9855, 21887, 255, 130815, 260607, 521727, 1033215, 2079743, 4089855, 8214527, 15732735, 32501759, 60792831, 123691007, 205275135, 465289215, 644251647, 1431666687, 65535, 8589869055, 17179475967...
[ "nonn", "easy" ]
A368654
[ 7, 3, 8, 9, 1, 0, 6, 5, 0, 9, 9, 7, 9, 4, 8, 1, 4, 4, 0, 0, 2, 9, 8, 4, 5, 1, 7, 8, 1, 3, 8, 4, 0, 7, 0, 1, 3, 6, 1, 6, 8, 6, 2, 5, 2, 5, 6, 4, 8, 1, 9, 9, 9, 6, 2, 6, 9, 3, 5, 2, 7, 3, 2, 6...
[ "nonn", "cons", "easy" ]
A154679
[ 2, 7, 11, 13, 17, 29, 31, 37, 43, 53, 61, 67, 71, 73, 79, 89, 97, 101, 103, 107, 127, 139, 151, 157, 163, 167, 179, 181, 193, 211, 223, 229, 233, 241, 251, 257, 269, 271, 277, 283, 293, 307, 313, 331, 337, 347, 349, 359, ...
[ "base", "easy", "nonn" ]
A323002
[ 6, 12, 24, 34, 46, 138, 174, 816, 1164, 1668, 1704, 5334, 10126, 11340, 13818, 18564, 82968, 202986, 241368, 285492, 1482390, 3027372 ]
[ "nonn", "more", "hard" ]
A354449
[ 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0...
[ "nonn" ]
A206859
[ 69, 4761, 192575, 7598355, 314918295, 13093461017, 541018725304, 22336434688428, 923097673638406, 38158725414249736, 1577142038208976100, 65180147142970130000, 2.6938235652250424e+21, 1.1133486306793122e+23 ]
[ "nonn" ]
A054548
[ 1, 0, 0, 1, 0, 0, 3, 1, 0, 0, 3, 16, 15, 6, 1, 0, 0, 0, 30, 135, 222, 205, 120, 45, 10, 1, 0, 0, 0, 15, 330, 1581, 3760, 5715, 6165, 4945, 2997, 1365, 455, 105, 15, 1, 0, 0, 0, 0, 315, 4410, 23604, 73755, 159390, 2...
[ "easy", "nonn", "tabf" ]
A296630
[ 5, 19, 71, 260, 966, 3581, 13275, 49209, 182422, 676247, 2506882, 9293135, 34450119, 127708318, 473421137, 1754995884, 6505857719, 24117540693, 89404932324, 331428565852, 1228622307611, 4554564483230, 16883998852534, 62589830114818 ]
[ "nonn" ]
A297460
[ 16, 48, 390, 1677, 10579, 52714, 303202, 1595942, 8870125, 47677361, 261582358, 1417183936, 7737647802, 42045961903, 229144537845, 1246564200638, 6788893506436, 36947833081238, 201168409801195, 1095013593863467 ]
[ "nonn" ]
A136194
[ 2, 5, 17, 43, 97, 101, 373, 557, 859, 1741, 2357, 9281 ]
[ "nonn", "more" ]
A186177
[ 140871930232, 16059530994398, 995828085723859, 42174821764604240, 1345005095452611300, 34184079614729410000, 719176668433423000000, 1.2873752982804494e+22, 2.0022667518648532e+23 ]
[ "nonn" ]
A120093
[ 1, 0, 4, 27, 625, 32, 4826809, 63, 64, 625, 31181719929966182000, 27, 2.5601832525455337e+28, 317057, 80, 343, 1.790105629031753e+51, 272, 1975325993 ]
[ "nonn" ]
A018900
[ 3, 5, 6, 9, 10, 12, 17, 18, 20, 24, 33, 34, 36, 40, 48, 65, 66, 68, 72, 80, 96, 129, 130, 132, 136, 144, 160, 192, 257, 258, 260, 264, 272, 288, 320, 384, 513, 514, 516, 520, 528, 544, 576, 640, 768, 1025, 1026, 1028, 10...
[ "nonn", "easy", "nice", "tabl", "look" ]
A078280
[ 2, 212, 22122, 2258577, 18913180982, 189219046321892, 1893099641364512800, 1.893554277736873e+22, 1.8940088686550555e+26, 1.8949180050232383e+30, 1.9367362777550569e+34, 1.9371950050368754e+38, 1.9376495963641493e+42 ]
[ "nonn", "base" ]
A319564
[ 1, 1, 2, 3, 5, 7, 10, 14, 21, 29, 40, 53, 73, 95, 128, 168, 221, 282, 368, 466, 599, 759, 962, 1201, 1513, 1881, 2345, 2901, 3590, 4407, 5416, 6614, 8083, 9827, 11937, 14442, 17458, 21021, 25299, 30347, 36363, 43438, 51843, 61705,...
[ "nonn" ]
A170797
[ 0, 1, 16896, 7203978, 537395200, 15263671875, 235122725376, 2373921992596, 17592722915328, 102947309439525, 500005000000000, 2088637053420126, 7703541745975296, 25593015436291304, 77784192406233600 ]
[ "nonn", "easy" ]
A064110
[ 1, 2, 23, 263, 2917, 38639, 603311, 11093633, 236524303, 5782539281 ]
[ "hard", "nonn" ]
A036448
[ 2, 1, 3, 11, 17, 111, 117, 317, 1317, 3317, 11317, 17317, 111317, 117317, 317317, 1317317, 3317317, 11317317, 17317317, 111317317, 117317317, 317317317, 1317317317, 3317317317, 11317317317, 17317317317, 111317317317, 117317317317, 317317317317, 1317317317317...
[ "nonn", "word" ]
A116597
[ 1, 2, 0, 0, -2, -8, 0, 0, -4, 10, 0, 0, 8, -8, 0, 0, 6, 16, 0, 0, -8, -16, 0, 0, -8, 10, 0, 0, 0, -24, 0, 0, 12, 16, 0, 0, -10, -8, 0, 0, -8, 32, 0, 0, 24, -24, 0, 0, 8, 18, 0, 0, -8, -24, 0, 0, -16, 16...
[ "sign" ]
A004435
[ 2, 3, 6, 7, 8, 11, 12, 14, 15, 18, 19, 21, 22, 23, 24, 27, 28, 30, 31, 32, 33, 35, 38, 39, 42, 43, 44, 46, 47, 48, 51, 54, 55, 56, 57, 59, 60, 62, 63, 66, 67, 69, 70, 71, 72, 75, 76, 77, 78, 79, 83, 84, 86, 87,...
[ "nonn" ]
A325402
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 12, 13, 14, 15, 16, 17, 18, 25, 20, 21, 22, 29, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 49, 36, 41, 38, 57, 40, 41, 42, 53, 44, 45, 46, 61, 48, 49, 50, 51, 52, 53, 54...
[ "nonn", "look", "base" ]
A224511
[ 1, 5, 3, 9, 7, 13, 11, 21, 17, 15, 43, 45, 29, 19, 41, 25, 23, 59, 39, 27, 35, 33, 31, 85, 37, 61, 51, 53, 47, 81, 79, 49, 55, 121, 83, 75, 57, 73, 77, 67, 65, 63, 71, 69, 125, 89, 87, 123, 105, 107, 95, 101, 163...
[ "nonn", "base", "less" ]
A373296
[ 1, 1, 2, 3, 5, 8, 12, 17, 25, 35, 51, 69, 96, 129, 175, 235, 312, 410, 539, 700, 913, 1173, 1508, 1923, 2450, 3106, 3921, 4928, 6180, 7715, 9622, 11935, 14783, 18243, 22470, 27601, 33819, 41327, 50407, 61325, 74494, 90244, 109154, ...
[ "nonn" ]
A319006
[ 1, 3, 8, 18, 34, 57, 89, 132, 187, 255, 338, 438, 556, 693, 851, 1032, 1237, 1467, 1724, 2010, 2326, 2673, 3053, 3468, 3919, 4407, 4934, 5502, 6112, 6765, 7463, 8208, 9001, 9843, 10736, 11682, 12682, 13737, 14849, 16020, 17251, 18543,...
[ "nonn", "easy" ]
A154397
[ 9, 4, 7, 1, 5, 7, 2, 4, 1, 1, 8, 3, 1, 8, 4, 3, 0, 3, 8, 7, 3, 0, 8, 7, 8, 2, 2, 4, 5, 5, 6, 1, 1, 8, 0, 1, 3, 1, 0, 6, 9, 3, 6, 9, 3, 2, 4, 1, 3, 1, 3, 0, 4, 5, 0, 2, 9, 1, 6, 0, 6, 5, 1, 6...
[ "nonn", "cons" ]
A261913
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 1, 2, 2, 2, 2, 2, 2, 2, 2...
[ "nonn", "base" ]
A030845
[ 1, 3, 10, 40, 202, 1215, 8509, 68078, 612703, 6127038, 67397424, 808769099, 10513998292, 147195976093, 2207939641406, 35327034262510, 600559582462677, 10810072484328192, 205391377202235680, 4107827544044713500 ]
[ "nonn" ]
A337945
[ 2, 4, 6, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 25, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42, 44, 45, 46, 48, 49, 50, 52, 54, 56, 58, 60, 62, 63, 64, 66, 68, 70, 72, 74, 75, 76, 78, 80, 81, 82, 84, 86, 88, 90, 92,...
[ "nonn" ]
A169093
[ 1, 32, 992, 30752, 953312, 29552672, 916132832, 28400117792, 880403651552, 27292513198112, 846067909141472, 26228105183385630, 813071260684954600, 25205209081233592000, 781361481518241400000, 2.4222205927065483e+22 ]
[ "nonn" ]
A020512
[ -13, -14, -12, 157, 170, 26521, 183, 4482037, 28562, 4824613, 30941, 128011456717, 28393, 21633936185161, 5229043, 878077201, 815730722, 617886851384381300, 4829007, 104422877883960440000, 810932305 ]
[ "sign" ]
A282891
[ 0, 0, 1, 2, 4, 1, 3, 5, 8, 2, 6, 10, 2, 6, 10, 14, 2, 7, 13, 0, 6, 13, 21, 5, 13, 21, 2, 10, 18, 26, 3, 10, 18, 27, 2, 12, 23, 34, 7, 19, 32, 3, 16, 30, 44, 13, 27, 41, 7, 22, 37, 1, 16, 31, 47, 7, 22, ...
[ "nonn", "look" ]
A178495
[ 1, 11, 41, 81, 111, 187, 231, 451, 567, 891, 1111, 1197, 1221, 1539, 1717, 1881, 2329, 2877, 3003, 3591, 3813, 4551, 4773, 5643, 6237, 6327, 7371, 8991, 9399, 9449, 10773, 11111, 11583, 13167, 13651, 15561, 16863, 17589, 23331, 24453, 2...
[ "nonn", "base" ]
A045994
[ 1, 1, 3, 7, 18, 47, 125, 337, 918, 2522, 6977, 19415, 54297, 152507, 429974, 1216297, 3450817, 9816460, 27991422, 79989880, 229034820, 656979399, 1887653560, 5431969355, 15653355151, 45167783715, 130491471940, 377426429199 ]
[ "nonn" ]
A248938
[ 4, 6, 1, 2, 6, 0, 9, 0, 8, 6, 1, 3, 8, 6, 1, 3, 0, 3, 3, 2, 8, 5, 2, 9, 8, 4, 6, 4, 2, 4, 6, 0, 7, 5, 1, 5, 8, 0, 1, 3, 8, 3, 4, 4, 3, 7, 6, 5, 8, 8, 2, 0, 6, 3, 0, 0, 7, 0, 3, 9, 7, 7, 5, 1...
[ "nonn", "cons" ]
A262148
[ 56, 56, 392, 392, 56, 392, 2744, 2744, 19208, 19208, 2744, 19208, 134456, 134456, 941192, 941192, 134456, 941192, 6588344, 6588344, 46118408, 46118408, 6588344, 46118408, 322828856, 322828856, 2259801992, 2259801992, 322828856, 2259801992 ]
[ "frac", "nonn" ]
A342646
[ 0, 0, 0, 0, 1, 3, 6, 13, 24, 40, 62, 96, 138, 192, 264, 354 ]
[ "nonn", "more" ]
A223165
[ 4, 10, 10, 40, 50, 40, 139, 500, 500, 139, 568, 3886, 20000, 3886, 568, 2134, 40380, 540154, 540154, 40380, 2134, 8724, 359428, 22935840, 43640576, 22935840, 359428, 8724, 33639, 3723640, 767019352, 6578580741, 6578580741, 767019352, 3723640 ]
[ "nonn", "tabl" ]
A045594
[ 1, 2, 4, 7, 8, 16, 32, 49, 58, 64, 128, 136, 256, 343, 512, 1024, 1552, 1682, 2048, 2312, 2401, 2564, 4096, 6176, 8192, 11179, 16384, 16807, 24059, 32768, 32896, 39304, 48778, 65536, 78253, 117649, 131072, 150544, 168413, 183944, 262144...
[ "nonn" ]
A332890
[ 1, 0, 4, 1, 6, 9, 1, 4, 7, 0, 3, 4, 1, 6, 9, 1, 7, 4, 7, 9, 3, 9, 4, 2, 1, 1, 1, 4, 1, 0, 0, 0, 1, 9, 1, 4, 3, 1, 6, 6, 9, 1, 9, 7, 6, 6, 4, 9, 1, 8, 9, 2, 9, 6, 6, 2, 0, 3, 7, 4, 9, 7, 3, 5...
[ "nonn", "cons" ]
A074344
[ 8, 9, 23, 51, 69, 81, 93, 129, 169, 179, 181, 273, 321, 323, 471, 493, 633, 689, 781, 933, 951, 969, 1229, 1309, 1509, 1707, 1821, 1863, 1913, 2169, 2337, 2433, 3259, 3513, 3681, 3921, 4431, 4611, 5043, 5091, 5361, 5409, 6231, 647...
[ "nonn", "base" ]
A148696
[ 1, 1, 3, 7, 23, 68, 238, 808, 2938, 10616, 40070, 151690, 586723, 2285518, 9042529, 36023276, 144911726, 586960584, 2396089239, 9837755873, 40629129008, 168667408199, 703695471412, 2948667510395, 12406647625358, 52403123154991, 222135049283566, 944740421631064, ...
[ "nonn", "walk" ]
A014694
[ 4, 4, 9, 9, 16, 14, 23, 19, 34, 26, 43, 35, 50, 40, 61, 51, 70, 58, 81, 63, 90, 72, 101, 85, 114, 90, 121, 95, 128, 112, 147, 121, 156, 132, 169, 139, 182, 148, 193, 159, 202, 170, 215, 175, 222, 188, 247, 203, 254, 20...
[ "nonn", "easy" ]
A267255
[ 1, 6, 7, 122, 31, 2018, 95, 32738, 95, 524258, 95, 8388578, 95, 134217698, 95, 2147483618, 95, 34359738338, 95, 549755813858, 95, 8796093022178, 95, 140737488355298, 95, 2251799813685218, 95, 36028797018963936, 95, 576460752303423500, 95, 922337203685477...
[ "nonn", "easy" ]
A304233
[ 1, 4, 9, 16, 25, 6, 49, 64, 81, 10, 121, 12, 169, 14, 15, 256, 289, 18, 361, 20, 21, 22, 529, 24, 625, 26, 729, 28, 841, 10, 961, 1024, 33, 34, 35, 36, 1369, 38, 39, 40, 1681, 14, 1849, 44, 45, 46, 2209, 48, 2401, 50, ...
[ "nonn" ]
A010826
[ 1, -20, 170, -760, 1615, 476, -11210, 22440, 1615, -64600, 60002, 51680, -9520, -213180, -83980, 803528, -379525, -692360, 119700, 80920, 1899830, -1235360, -755990, -1200040, -1981435, 8388956, -361760, -5068440 ]
[ "sign" ]
A132531
[ 2, 4, 14, 226, 110922, 90668884073, 3.1375692791338976e+22, 1.0357222201607203e+45, 1.574505377241043e+90 ]
[ "frac", "nonn" ]
A272644
[ 1, 1, 1, 1, 5, 1, 1, 13, 13, 1, 1, 29, 73, 29, 1, 1, 61, 301, 301, 61, 1, 1, 125, 1081, 2069, 1081, 125, 1, 1, 253, 3613, 11581, 11581, 3613, 253, 1, 1, 509, 11593, 57749, 95401, 57749, 11593, 509, 1, 1, 1021, 36301, 268...
[ "nonn", "tabl" ]
A236135
[ 2816, 67264, 1611168, 38691488, 929734720, 22330450944, 536187075776, 12875700181728, 309219609067072, 7426202632991648, 178338308747877630, 4282727643901356500, 102850031124264700000, 2.4699654494166026e+21 ]
[ "nonn" ]
A193656
[ 1, 7, 43, 247, 1363, 7327, 38683, 201607, 1040803, 5335087, 27199723, 138095767, 698867443, 3527891647, 17773675963, 89405250727, 449173737283, 2254458621007, 11306652843403, 56670703170487, 283903271666323 ]
[ "nonn" ]
A349797
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0...
[ "nonn" ]
A383773
[ 1, 1, 36, 450, 17550, 744906, 47753440, 3909436192, 410384120220, 53323552728000, 8417606908865220, 1586195621597483000, 351735343178101000000, 9.06675041801938e+22, 2.688418898047281e+25, 9.08614712474608e+27, 3.472279409772212e+30 ]
[ "nonn" ]
A192663
[ 1, 1, 3, 9, 22, 54, 136, 340, 857, 2164, 5481, 13911, 35379, 90124, 229913, 587254, 1501615, 3843314, 9845118, 25238541, 64744455, 166190960, 426829202, 1096784835, 2819620836, 7251796132, 18658280277, 48023738374, 123648031266, 318460151301, 820446813941 ...
[ "nonn" ]
A266244
[ 1, 0, 101, 1100000, 11101, 11110100000, 11101, 111111110100000, 11101, 1111111111110100000, 11101, 1.111111111111111e+22, 11101, 1.111111111111111e+26, 11101, 1.111111111111111e+30, 11101, 1.111111111111111e+34, 11101 ]
[ "nonn", "easy" ]
A206722
[ 1, 1, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 3, 2, 1, 1, 3, 2, 1, 1, 3, 2, 1, 1, 1, 3, 2, 1, 1, 1, 3, 2, 1, 1, 1, 1, 3, 2, 1, 1, 1, 1, 3, 2, 1, 1, 1, 1, 4, 2, 1, 1, 1, 1, 4, 2, 1...
[ "nonn", "tabf", "easy" ]
A371068
[ 1, 1, 0, 0, 24, 360, 2160, 7560, 241920, 8164800, 145756800, 1736380800, 34488115200, 1416906691200, 46117316044800, 1085696644032000, 26627911620710400, 1054301997805056000, 46867776416068610000, 1.7264888048706794e+21, 5.840467136613985e+22 ]
[ "nonn" ]
A086457
[ 0, 1, 10, 11, 95, 96, 100, 101, 105, 106, 110, 111, 115, 116, 120, 121, 125, 126, 130, 131, 135, 136, 140, 141, 895, 896, 950, 951, 955, 956, 960, 961, 965, 966, 970, 971, 975, 976, 980, 981, 985, 986, 990, 991, 995, 996, 10...
[ "base", "easy", "nonn" ]
A041428
[ 15, 91, 2745, 16561, 499575, 3014011, 90919905, 548533441, 16546923135, 99830072251, 3011449090665, 18168524616241, 548067187577895, 3306571650083611, 99745216690086220, 601777871790601000 ]
[ "nonn", "cofr", "frac", "easy" ]
A175535
[ 110952, 12952, 10152, 8073, 129128, 78808, 34088, 13001, 142472, 100577, 61832, 14344, 154880, 36089, 5120, 1936, 161154, 52290, 41346, 5310, 163982, 149618, 106418, 2482, 166880, 63520, 33824, 6176, 167778, 130338, 70366, 3618, 172706 ]
[ "nonn" ]
A189888
[ 11, 19, 43, 97, 163, 191, 223, 457, 877, 1049, 1307, 1987, 2029, 2129, 4217, 6599, 9967, 10357, 18233, 66343, 74573, 95911, 99719, 186551, 196337, 211219, 262469, 277301, 416573, 603487, 994549, 1403137, 4117441, 4805761, 4895789, 5823067, 5842...
[ "nonn" ]
A158372
[ 575, 1151, 1727, 2303, 2879, 3455, 4031, 4607, 5183, 5759, 6335, 6911, 7487, 8063, 8639, 9215, 9791, 10367, 10943, 11519, 12095, 12671, 13247, 13823, 14399, 14975, 15551, 16127, 16703, 17279, 17855, 18431, 19007, 19583, 20159, 20735, 21311 ]
[ "nonn", "easy" ]
A140214
[ 1, 1, 1, 1, 5, 1, 1, 1, 1, 5, 11, 1, 1, 1, 5, 1, 17, 1, 1, 5, 1, 11, 23, 1, 5, 1, 1, 1, 29, 5, 1, 1, 11, 17, 175, 1, 1, 1, 1, 5, 41, 1, 1, 11, 5, 23, 47, 1, 1, 5, 17, 1, 53, 1, 55, 1, 1, 29, 59, 5, ...
[ "nonn", "easy" ]
A078081
[ 0, 1, 2, 37, 1, 4, 23, 2, 15, 2, 1, 1, 1, 1, 1, 7, 4, 3, 2, 4, 1, 2, 1, 3, 1, 1, 1, 5, 1, 3, 2, 4, 1, 28, 2, 4, 7, 1, 1, 3, 23, 1, 5, 12, 8, 5, 1, 1, 1, 3, 1, 2, 3, 1, 2, 1, 27, 4, 3, 1, 1, 2, ...
[ "nonn", "cofr" ]
A131407
[ 1, 1, 2, 11, 95, 1307, 27035, 788279, 30812087, 1554832679, 98387784047, 7628836816295, 711320467520855, 78520062277781090, 10127079289703950000, 1.5089878274510792e+21, 2.5725040670740995e+23, 4.975095574978713e+25, 1.083347158944927e+28 ]
[ "nonn" ]
A111812
[ 1, 8, 72, 888, 16392, 479736, 23196168, 1909718520, 273790460424, 69532461669880, 31699923943776776, 26220200137673187000, 3.9689067731528645e+22, 1.1073278118321242e+26 ]
[ "nonn" ]
A276991
[ 0, -1, 0, -2, 8, -86, 1448, -40608, 1867080, -140055600, 17085644400, -3383043446640, 1085946439923840, -564694233102890900, 475471874409018800000, -6.480685134057235e+23, 1.429638846930685e+27, -5.103811083889433e+30 ]
[ "sign" ]
A221646
[ 1, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 1, 2, 2, 2, 1, 3, 2, 1, 1, 1, 3, 1, 2, 3, 1, 1, 3, 1, 1, 1, 2, 1, 3, 2, 1, 1, 3, 3, 1, 1, 2, 1, 1, 1, 3, 1, 2, 2, 1, 2, 3, 2, 1, 1, 2, 3, 1, 1, 3, 1, 1, 2...
[ "nonn", "easy" ]
A093310
[ 3, 3, 5, 41, 461, 4637, 51347, 563009, 6445991, 80358599, 1066687469, 15116681441, 228312888437 ]
[ "nonn", "more" ]
A124135
[ 0, 0, 3, 46, 1041, 32592, 1375919, 75858738, 5309829837, 460680712084, 48552875077995, 6111752613274230, 905772678574995600, 156116663818415080000, 3.096439585092851e+22 ]
[ "nonn" ]
A002908
[ 2, 4, 8, 24, 84, 328, 1372, 6024, 27412, 128228, 613160, 2985116, 14751592, 73825416, 373488764, 1907334616, 9820757380, 50934592820, 265877371160, 1395907472968, 7366966846564, 39062802311672, 208015460898924, 1112050252939612, 5966352507546872 ]
[ "nonn", "nice" ]
A025229
[ 1, 3, 6, 21, 78, 318, 1356, 5997, 27222, 126138, 594132, 2836290, 13692300, 66729180, 327855768, 1622216829, 8076311142, 40427919714, 203353800324, 1027318915254, 5210182030308, 26517609163812, 135397544040744, 693364054299474 ]
[ "nonn", "easy" ]
A215332
[ 1, 5, 4, 11, 26, 71, 173, 450, 1132, 2898, 7393, 18987, 48796, 125963, 325786, 845153, 2197255, 5725849, 14950221, 39110366, 102488189, 269002371, 707090144, 1861183842, 4905157159, 12942843383 ]
[ "nonn", "more" ]
A190136
[ 3, 5, 5, 7, 7, 7, 7, 11, 11, 13, 13, 13, 13, 17, 17, 19, 19, 19, 19, 23, 23, 23, 23, 13, 13, 29, 29, 31, 31, 31, 31, 17, 17, 37, 37, 37, 37, 41, 41, 43, 43, 43, 43, 47, 47, 47, 47, 17, 17, 53, 53, 53, 53, 19, ...
[ "nonn" ]
A115861
[ 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 2, 0, 1, 1, 1, 1, 2, 0, 2, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 2, 2, 0, 1, 1, 0, 1, 1, 1, 4, 1, 1, 2, 3, 0, 3, 2, 3, 0...
[ "nonn" ]
A309835
[ 5798663, 5555564201311, 5555574497311, 5555593942711, 66815976110703, 69437045907973260000 ]
[ "nonn", "base", "more" ]
A350159
[ 3, 6, 8, 11, 10, 18, 12, 20, 19, 24, 16, 36, 18, 30, 32, 37, 22, 48, 24, 50, 40, 42, 28, 70, 37, 48, 48, 64, 34, 84, 36, 70, 56, 60, 56, 103, 42, 66, 64, 100, 46, 108, 48, 92, 90, 78, 52, 136, 63, 102, 80, 106, 5...
[ "nonn" ]
A196644
[ 1, 41, 356, 2783, 25118, 217880, 1921822, 16668173, 146029787, 1275692776, 11144916533, 97386223456, 850945201900, 7435399467018, 64968547774607, 567683242015249, 4960297439355274, 43342029653468630, 378713657086113300 ]
[ "nonn" ]
A275750
[ 37, 229, 997, 1048549, 4194277, 67108837, 1125899906842597, 72057594037927910, 288230376151711700, 1.361129467683754e+39, 1.393796574908164e+42, 1.725436586697641e+69 ]
[ "nonn" ]
A364168
[ 15, 27, 32, 35, 36, 39, 51, 55, 60, 63, 64, 75, 84, 87, 91, 95, 96, 99, 100, 108, 111, 115, 119, 123, 128, 132, 135, 140, 143, 144, 147, 155, 156, 159, 160, 171, 175, 180, 183, 187, 192, 195, 196, 203, 204, 207, 215, 219, ...
[ "nonn" ]
A251078
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 76, 195, 364, 589, 876, 1231, 1660, 2169, 2764, 21232, 57379, 123291, 235860, 417784, 698657, 1116149, 1717276, 2559760, 7386240, 18797731, 42769684, 89201688, 173879976, 321141337, 567405676, 965768880, 1591873744, 3...
[ "nonn" ]
A009722
[ 1, 176, 570496, 9223556096, 460993706622976, 55266063875773300000, 1.355641267674613e+25, 6.098119622978353e+30, 4.642750780653941e+36 ]
[ "nonn" ]
A092037
[ 1, 1, 0, 1, 2, 0, 0, 0, 0, 1, 2, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 0, 2, 2, 0, 0, 0, 0, 2, 2, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0...
[ "nonn" ]
A189995
[ 28, 992, 8128, 261632, 1448424448, 67100672, 1941802827776, 753623571759104, 23998307331473410, 341653284209033200, 8.316321134799695e+21, 740764429532373500000, 3.055944658387281e+25, 4.966694334441542e+29, 1.7776484020396435e+31, 1.1188223110510347e+31 ]
[ "nonn" ]
A264810
[ 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12, 13, 13, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 21, 21, 22, 22, 23, 23, 24, ...
[ "nonn" ]
A230630
[ 0, 1, 1, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0...
[ "nonn", "easy" ]
A339569
[ 1, 1, 1, 1, 1, 1, 1, 1, 3, 4, 5, 10, 16, 32, 56, 90, 134, 186, 304, 476, 746, 1308, 2522, 4845, 9129, 17260, 32684, 59908, 106181, 191779, 337793, 596689, 1061991, 1907311, 3518903, 6426672, 12093858, 22777645, 42886411, 81002076, 15157...
[ "nonn" ]
A312906
[ 1, 4, 9, 13, 17, 23, 26, 30, 37, 40, 43, 49, 53, 57, 62, 66, 70, 75, 80, 84, 89, 92, 96, 103, 106, 109, 115, 119, 123, 129, 133, 136, 141, 146, 150, 155, 158, 162, 169, 172, 176, 182, 185, 189, 195, 199, 202, 207, 212, ...
[ "nonn" ]
A185992
[ 124114, 35286678, 4615215875, 746010901791, 115518814872268, 18279829286165896, 2878184444421566000, 453752833171594740000, 7.156625297541e+22, 1.12841213021743e+25 ]
[ "nonn" ]
A104551
[ 0, 1, 1, -1, -1, 5, 5, -15, -15, 55, 55, -197, -197, 727, 727, -2705, -2705, 10165, 10165, -38455, -38455, 146301, 146301, -559131, -559131, 2145025, 2145025, -8255575, -8255575, 31861025, 31861025, -123256495, -123256495, 477823895, 477823895, -...
[ "easy", "sign" ]
A030911
[ 1, 3, 10, 40, 204, 1227, 8591, 68729, 618567, 6185670, 68042371, 816508457, 10614609952, 148604539330, 2229068089950, 35665089439210, 606306520466578, 10913517368398412, 207356829999569860, 4147136599991397000 ]
[ "nonn" ]