id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A268480
[ 2, 3, 5, 8, 38, 40, 64, 73, 89, 236, 480, 486 ]
[ "nonn", "more" ]
A145984
[ 1, 1, 3, 42, 2730, 755160, 843461640, 3721953186000, 64522032005970000, 4.4000028885009925e+21, 1.1845546679482423e+27, 1.2636196121990942e+33, 5.35741093974606e+39, 9.047781220800555e+46, 6.0960200954615825e+54 ]
[ "easy", "nonn" ]
A368022
[ 1, 14, 3612, 14798454, 930744290905, 891107801867703200, 1.2977575456694246e+25, 2.880177942851158e+33, 9.767068920318918e+42, 5.075211461533301e+53, 4.052022196094757e+65 ]
[ "nonn" ]
A028144
[ 1, 33, 703, 12333, 194239, 2860821, 40291111, 549874221, 7333588207, 96118840389, 1242878986999, 15899609772189, 201637495269055, 2538952949123637, 31780003009949770, 395799688351994600 ]
[ "nonn" ]
A016046
[ 1, 3, 7, 19, 27, 127, 742, 39, 55, 22153, 4479, 79, 31468, 405, 2323, 463, 111, 33169, 16402, 159, 223, 7573, 5247, 811, 1595416, 3711, 607, 30619, 447, 42525, 1822, 639, 1375, 3217441, 1095201, 319, 398884, 32805, 365350, 88615, 1215, ...
[ "nonn" ]
A202099
[ 9450, 99225, 617400, 3841600, 17287200, 77792400, 280052640, 1008189504, 3080579040, 9412880400, 25357147200, 68309049600, 166503308400, 405851814225, 911913952950, 2048991844900, 4302882874290, 9036054036009, 17922751806960 ]
[ "nonn" ]
A256597
[ 1, 11, 76, 436, 2441 ]
[ "nonn", "more" ]
A381241
[ 0, 3, 5, 6, 7, 10, 11, 13, 14, 21, 29, 33, 42, 45, 53, 58, 64, 69, 77, 85, 88, 90, 93, 108, 117, 128, 136, 138, 161, 172, 176, 181, 195, 208, 216, 249, 258, 267, 293, 322, 326, 341, 347, 354, 381, 390, 401, 425, 434, 4...
[ "nonn" ]
A172401
[ 1, 1, 2, 6, 32, 332, 6928, 292334, 24875760, 4254812880, 1459549877168, 1002824206109916, 1379081986798078000, 3.7944893055359475e+21, 2.0884859614892223e+25, 2.2992308600257674e+29 ]
[ "nonn" ]
A245318
[ 1, 7, 133, 1517, 11761, 676333, 1484413, 3627557, 10289371, 1449045241, 2433687407, 12309023183, 29013950411, 11701492535299, 223598572318157, 362232879754103 ]
[ "nonn", "more" ]
A134081
[ 1, 2, 1, 3, 5, 1, 4, 12, 8, 1, 5, 22, 26, 11, 1, 6, 35, 60, 45, 14, 1, 7, 51, 115, 125, 69, 17, 1, 8, 70, 196, 280, 224, 98, 20, 1, 9, 92, 308, 546, 574, 364, 132, 23, 1, 10, 117, 456, 966, 1260, 1050, 552, 171, ...
[ "nonn", "tabl" ]
A206297
[ 1, 3, 5, 9, 13, 21, 25, 37, 45, 57, 65, 85, 93, 117, 129, 145, 161, 193, 205, 241, 257, 281, 301, 345, 361, 401, 425, 461, 485, 541, 557, 617, 649, 689, 721, 769, 793, 865, 901, 949, 981, 1061, 1085, 1169, 1209, 1257, 1301, ...
[ "nonn" ]
A126570
[ 1, 1, 2, 1, 4, 3, 1, 6, 10, 5, 1, 8, 21, 20, 4, 1, 10, 36, 56, 35, 7, 1, 12, 55, 120, 126, 56, 6, 1, 14, 78, 220, 330, 252, 84, 9, 1, 16, 105, 364, 715, 792, 462, 120, 8, 1, 18, 136, 560, 1365, 2002, 1716, 792, ...
[ "nonn", "tabl" ]
A195869
[ 5, 16, 8, 33, 56, 24, 85, 35, 120, 161, 39, 63, 208, 80, 261, 320, 120, 385, 95, 143, 456, 533, 195, 616, 224, 705, 45, 175, 800, 288, 323, 51, 77, 279, 399, 440, 528 ]
[ "nonn" ]
A285949
[ 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0...
[ "nonn", "easy" ]
A224094
[ 1, 4, 36, 48, 1800, 720, 35280, 20160, 226800, 10080, 731808, 665280, 1967565600, 11211200, 129729600, 34594560, 18745927200, 28641600, 371536925760, 3990729600, 3226504881600, 4877558400, 466663317120, 550720684800, 2192556726360000, 175404538108800 ]
[ "nonn", "frac" ]
A338090
[ 8, 17, 26, 35, 44, 53, 62, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 89, 98, 107, 116, 125, 134, 143, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 170, 179, 188, 197, 206, 215, 224, 233, 234, 235, 236, 237, 238, 239, ...
[ "nonn", "base", "easy" ]
A115334
[ 1, 2, 4, 5, 7, 10, 14, 17, 19, 20, 25, 32, 34, 40, 47, 49, 52, 55, 62, 67, 77, 82, 89, 94, 95, 104, 110, 115, 119, 124, 130, 140, 154, 157, 164, 172, 185, 209, 214, 215, 220, 227, 229, 242, 259, 272, 280, 287, 292, 305...
[ "nonn" ]
A189675
[ 1, -1, 2, 2, -4, 3, -5, 10, -9, 5, 14, -28, 27, -20, 8, -42, 84, -84, 70, -40, 13, 132, -264, 270, -240, 160, -78, 21, -429, 858, -891, 825, -600, 351, -147, 34, 1430, -2860, 3003, -2860, 2200, -1430, 735, -272, 55, -4862, 9...
[ "sign", "tabl" ]
A156533
[ 1, -11, -42, 4103, 13902, -1205171, -12127122, 5929872751, 19870432302, -3125529417461, -52361333261202, 20134698304350772, 202385128775958700, -45987299500790190000, -1.0785682322512684e+21, 2.2622744742793362e+24, 7.579785448482859e+24 ]
[ "sign", "frac" ]
A031172
[ 29, 34, 36, 36, 36, 40, 42, 42, 44, 42, 42, 42, 42, 46, 50, 48, 44, 46, 42, 42, 54, 52, 54, 50, 52, 50, 54, 56, 58, 60, 52, 50, 54, 54, 48, 48, 54, 60, 60, 56, 54, 58, 50, 58, 60, 64, 58, 48, 50, 52, 50, 54, 66, ...
[ "nonn" ]
A050294
[ 1, 2, 2, 3, 4, 4, 5, 6, 7, 8, 9, 9, 10, 11, 11, 12, 13, 14, 15, 16, 16, 17, 18, 18, 19, 20, 20, 21, 22, 22, 23, 24, 24, 25, 26, 27, 28, 29, 29, 30, 31, 31, 32, 33, 34, 35, 36, 36, 37, 38, 38, 39, 40, 40, 41, ...
[ "nonn" ]
A149958
[ 1, 2, 5, 16, 53, 190, 712, 2748, 10955, 44472, 184169, 774033, 3294304, 14186277, 61653079, 270328574, 1194121104, 5310366701, 23760820194, 106886302347, 483240427871, 2194532068235, 10007208426762, 45807047821678, 210404752046038, 969585995010804, 448134790104814...
[ "nonn", "walk" ]
A128124
[ 1, 2, 4, 5, 3763, 125714, 167716, 1803962, 2895548, 4031785, 36226466, 16207566916, 103742264732, 29000474325364, 51053256144532, 219291270961199, 1611547934753332, 5816826177630619 ]
[ "hard", "more", "nonn" ]
A261763
[ 1, 1, 2, 1, 4, 7, 1, 8, 26, 34, 1, 16, 115, 179, 209, 1, 32, 542, 1102, 1402, 1546, 1, 64, 2809, 7609, 10759, 12487, 13327, 1, 128, 15374, 56534, 92234, 113402, 125162, 130922, 1, 256, 89737, 457993, 865393, 1139569, 1304209, 1396...
[ "nonn", "tabl" ]
A007489
[ 0, 1, 3, 9, 33, 153, 873, 5913, 46233, 409113, 4037913, 43954713, 522956313, 6749977113, 93928268313, 1401602636313, 22324392524313, 378011820620313, 6780385526348313, 128425485935180320, 2561327494111820300, 53652269665821260000, 1.177652997443429e+21 ]
[ "nonn", "easy", "nice" ]
A205491
[ 1, 3, 7, 23, 51, 165, 386, 1039, 2554, 6963, 17260, 47825, 124840, 340658, 911037, 2484687, 6614616, 17735646, 46647167, 122536323, 318125129, 825153684, 2130076369, 5522611009, 14375957026, 37817347272, 100579846732, 271246531726, 740731197176 ]
[ "nonn" ]
A186631
[ 1, 2, 5, 3, 8, 1, 5, 4, 8, 0, 6, 4, 2, 8, 9, 1, 6, 8, 6, 6, 9, 6, 3, 7, 0, 9, 3, 1, 1, 4, 3, 8, 7, 4, 7, 9, 9, 8, 6, 9, 9, 3, 4, 3, 3, 8, 3, 8, 6, 9, 5, 2, 1, 1, 4, 7, 1, 2, 7, 7, 9, 6, 8, 4...
[ "nonn", "cons" ]
A138827
[ 2, 4, 7, 10, 19, 25, 19, 37, 82, 115, 142, 172, 745, 856, 1603, 2980, 3079, 4240, 5812, 5842, 13165, 13480, 15136, 27052, 29455, 31339, 60112, 116386, 149239, 179821, 291511, 1025683, 1164760, 1703224, 1891861, 4038604, 4091767, 9440575, 18...
[ "nonn", "base" ]
A290333
[ 1, 3, 2, 4, 11, 27, 3, 12, 5, 31, 2, 95, 3, 495, 36, 7, 69, 8, 10, 231, 17, 8, 5, 80, 4, 3, 68, 47, 5, 11, 12, 23, 2147, 19, 6, 324, 4, 6107, 14, 31, 6585, 803, 12, 164, 14, 11, 5, 252, 75, 351, 8, 160, 17, 131...
[ "nonn" ]
A261917
[ 5, 7, 8, 9, 10, 13, 14, 15, 16, 19, 20, 21, 22, 25, 27, 28, 29, 30, 32, 33, 34, 35, 37, 38, 39, 40, 42, 43, 44, 45, 47, 48, 49, 50, 53, 54, 55, 56, 58, 59, 60, 61, 63, 64, 65, 66, 68, 69, 70, 71, 73, 74, 75, 76...
[ "nonn", "base" ]
A311492
[ 1, 4, 8, 12, 17, 22, 25, 31, 37, 40, 45, 49, 55, 61, 60, 66, 75, 75, 80, 86, 91, 98, 95, 101, 113, 110, 115, 123, 127, 135, 130, 136, 151, 145, 150, 160, 163, 172, 165, 171, 189, 180, 185, 197, 199, 209, 200, 206, 227, ...
[ "nonn" ]
A312732
[ 1, 4, 8, 15, 19, 21, 27, 32, 39, 45, 44, 50, 52, 62, 69, 70, 73, 77, 81, 92, 99, 92, 105, 100, 114, 121, 121, 124, 128, 133, 145, 151, 139, 159, 148, 169, 175, 170, 173, 179, 184, 199, 206, 186, 211, 195, 223, 229, 222, ...
[ "nonn" ]
A312339
[ 1, 4, 8, 14, 17, 18, 26, 30, 32, 36, 42, 48, 54, 56, 57, 66, 70, 72, 80, 78, 86, 94, 95, 100, 110, 110, 110, 120, 118, 132, 134, 134, 143, 156, 152, 146, 162, 154, 176, 178, 173, 182, 198, 194, 182, 204, 190, 218, 220, ...
[ "nonn" ]
A310777
[ 1, 4, 7, 12, 15, 22, 22, 31, 30, 40, 39, 47, 49, 54, 58, 61, 68, 68, 77, 77, 84, 86, 91, 96, 97, 107, 104, 115, 112, 124, 120, 132, 130, 139, 138, 147, 147, 155, 156, 163, 163, 172, 172, 179, 181, 188, 189, 195, 198, 2...
[ "nonn" ]
A177410
[ 1, 2, 22, 1240, 316316, 343855008, 1551088459936, 28684932916796290, 2.1617882134131822e+21, 6.616240624635902e+26, 8.20418024446932e+32 ]
[ "nonn" ]
A198767
[ 7, 39, 199, 999, 4999, 24999, 124999, 624999, 3124999, 15624999, 78124999, 390624999, 1953124999, 9765624999, 48828124999, 244140624999, 1220703124999, 6103515624999, 30517578124999, 152587890624999, 762939453124999 ]
[ "nonn", "easy" ]
A079561
[ 1, 12, 32, 1392, 121344, 312212, 13112222, 1279468800, 31136789207244, 13211311613063223000, 1.3403194265214368e+25, 3.113112374374075e+33, 1.3666898192193106e+45 ]
[ "base", "nonn" ]
A216704
[ 1, 56, 3360, 206080, 12776960, 797282304, 49963024384, 3140532961280, 197853576560640, 12486759054049280, 789163172215914500, 49932506169297860000, 3.1623920573888646e+21, 2.0044700425295573e+23, 1.2714067126901763e+25, 8.069194603206986e+26 ]
[ "nonn" ]
A009236
[ 1, 2, 20, 392, 12560, 579872, 36034880, 2874676352, 284538241280, 34058188677632, 4831480473359360, 799233222752602100, 152126941229961000000, 3.2947584100184814e+22, 8.042650107769696e+24, 2.1947281303279156e+27, 6.647795267019155e+29 ]
[ "nonn" ]
A291706
[ 3, 9, 24, 56, 136, 328, 792, 1912, 4616, 11144, 26904, 64952, 156808, 378568, 913944, 2206456, 5326856, 12860168, 31047192, 74954552, 180956296, 436867144, 1054690584, 2546248312, 6147187208, 14840622728, 35828432664, 86497488056, 208823408776, 504144305608 ...
[ "nonn", "easy" ]
A204742
[ 17835, 352950, 7146451, 141179471, 2839352529, 57762265633, 1169004717315, 23699614326315, 481694347006804, 9783482284673750, 198709861019246980, 4037924969719681000, 82048520869992760000, 1.6671089793318254e+21 ]
[ "nonn" ]
A116451
[ 5, 7, 9, 10, 11, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 6...
[ "nonn" ]
A119792
[ 1, 2, 4, 5, 6, 8, 12, 15, 18, 20, 24, 30, 32, 40, 48, 60, 63, 64, 80, 84, 90, 96, 120, 160, 180, 240, 252, 256, 288, 320, 336, 384, 432, 512 ]
[ "nonn" ]
A017748
[ 1, 85, 3655, 105995, 2331890, 41507642, 622614630, 8093990190, 93080887185, 961835834245, 9041256841903, 78083581816435, 624668654531480, 4660989191504120, 32626924340528840, 215337700647490340 ]
[ "nonn" ]
A269214
[ 0, 4, 0, 24, 96, 0, 108, 768, 1152, 0, 432, 6528, 18048, 11424, 0, 1620, 49536, 308544, 361728, 103488, 0, 5832, 360960, 4744704, 12548544, 6712704, 889056, 0, 20412, 2546304, 70371048, 394072704, 474091776, 118872576, 7375872, 0, 69984, 1756...
[ "nonn", "tabl" ]
A159131
[ 1, 37, 892, 18104, 339402, 6142870, 109946165, 1973820605, 35862423922, 663394959580 ]
[ "nonn" ]
A223828
[ 86, 7396, 310396, 7291180, 111026387, 1215505987, 10278415020, 70637615542, 409495177832, 2059270878998, 9178828735664, 36883354080922, 135437433227956, 459525932946746, 1453793476211931, 4321377067061981, 12146690423924810 ]
[ "nonn" ]
A041545
[ 1, 34, 1157, 39372, 1339805, 45592742, 1551493033, 52796355864, 1796627592409, 61138134497770, 2080493200516589, 70797906952061790, 2409209329570618000, 81983915112353050000, 2.7898623231495745e+21, 9.49373029021979e+22 ]
[ "nonn", "frac", "easy" ]
A225159
[ 1, 6, 43, 2143, 5211907, 30351298460743, 1.0169663980539112e+27, 1.1308153086196835e+54 ]
[ "nonn" ]
A304957
[ 5, 333, 1203, 8361, 60568, 435964, 3174054, 23304518, 170481467, 1248838598, 9167230233, 67263160245, 493257323135, 3619388695936, 26558238094660, 194837640252464, 1429535459938593, 10488919190348148, 76956245346728960 ]
[ "nonn" ]
A069575
[ 4, 5, 7, 13, 23, 43, 157, 619 ]
[ "base", "nonn", "more" ]
A170122
[ 1, 17, 272, 4352, 69632, 1114112, 17825792, 285212672, 4563402752, 73014444032, 1168231104512, 18691697672192, 299067162755072, 4785074604081152, 76561193665298430, 1224979098644775000, 19599665578316400000 ]
[ "nonn" ]
A119675
[ 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 55, 57, 58, 59, 61, 62, ...
[ "easy", "nonn" ]
A193054
[ 0, 0, 1067638, 34524432316, 1250063279938854, 38350427205194670000, 1.2549349863992374e+24, 4.01577731886008e+28, 1.2931534238966885e+33, 4.15756893783158e+37, 1.3370892000283526e+42 ]
[ "nonn" ]
A087072
[ 1, 2, 3, 4, 6, 7, 9, 11, 13, 14, 16, 19, 20, 21, 22, 25, 27, 29, 32, 33, 34, 35, 37, 38, 40, 43, 44, 45, 46, 47, 50, 51, 54, 55, 57, 61, 62, 63, 64, 65, 66, 69, 70, 73, 74, 76, 79, 80, 81, 82, 85, 86, 87, 89, ...
[ "nonn" ]
A048859
[ 1, 2, 6, 7, 8, 13, 14, 15, 16, 22, 23, 24, 25, 26, 33, 34, 35, 36, 37, 38, 46, 47, 48, 49, 50, 51, 52, 61, 62, 63, 64, 65, 66, 67, 68, 78, 79, 80, 81, 82, 83, 84, 85, 86, 97, 98, 99, 100, 101, 102, 103, 104, 105,...
[ "nonn" ]
A382286
[ 1, 1, 1, 1, 4, 1, 4, 2, 1, 2, 9, 2, 9, 2, 2, 1, 16, 2, 16, 1, 2, 5, 16, 1, 1, 5, 3, 1, 25, 1, 25, 1, 3, 8, 1, 1, 36, 8, 3, 1, 36, 1, 36, 3, 2, 8, 36, 1, 1, 2, 6, 3, 49, 2, 2, 1, 6, 13, 49, 2, 49, ...
[ "nonn" ]
A216816
[ 3, 7, 23, 43, 47, 67, 83, 103, 107, 127, 163, 167, 223, 227, 263, 283, 307, 347, 367, 383, 443, 463, 467, 487, 503, 523, 547, 563, 587, 607, 643, 647, 683, 727, 743, 787, 823, 827, 863, 883, 887, 907, 947, 967, 983, 1063, 10...
[ "dead" ]
A193609
[ 2, 6, 64, 1026, 32832, 2097152, 268435456, 68719348224, 35184372089856, 36028797018963970, 73786976297388340000 ]
[ "nonn" ]
A352682
[ 1, 1, 0, 1, 1, 1, 1, 2, 2, 2, 1, 3, 3, 5, 6, 1, 4, 4, 8, 15, 21, 1, 5, 5, 11, 24, 52, 82, 1, 6, 6, 14, 33, 83, 203, 354, 1, 7, 7, 17, 42, 114, 324, 877, 1671, 1, 8, 8, 20, 51, 145, 445, 1400, 4140, 8536, 1,...
[ "nonn", "tabl" ]
A354427
[ 3, 13, 19, 631 ]
[ "nonn", "more", "hard" ]
A122095
[ 11, 29, 179, 239, 431, 761, 857, 941, 1367, 1667, 1871, 1877, 2411, 2837, 3041, 3119, 3329, 3347, 3767, 4289, 5021, 5087, 5231, 5261, 5717, 5861, 6449, 6917, 6959, 7079, 7211, 7919, 8429, 8741, 8867, 9341, 9461, 9851, 10211, 10979, 1210...
[ "nonn" ]
A243244
[ 0, 0, 0, 1, 4, 30, 317, 5511, 165165, 8932499, 870814993, 153082769374, 48887756906623 ]
[ "nonn", "more" ]
A135435
[ 7, 0, 0, 0, 4, 0, 0, 7, 4, 0, 0, 11, 4, 0, 7, 15, 4, 0, 18, 19, 4, 7, 33, 23, 4, 25, 52, 27, 11, 58, 75, 31, 36, 110, 102, 42, 94, 185, 133, 78, 204, 287, 175, 172, 389, 420, 253, 376, 676, 595, 425, 765, 1096, ...
[ "easy", "nonn" ]
A387113
[ 4, 8, 12, 16, 18, 20, 24, 27, 28, 32, 36, 40, 44, 48, 52, 54, 56, 60, 64, 68, 72, 76, 80, 81, 84, 88, 90, 92, 96, 100, 104, 108, 112, 116, 120, 124, 126, 128, 132, 135, 136, 140, 144, 148, 150, 152, 156, 160, 162, 164,...
[ "nonn" ]
A244030
[ 8, 24, 26, 35, 56, 68, 119, 120, 125, 134, 185, 194, 206, 290, 314, 326, 341, 356, 371, 404, 464, 489, 524, 545, 626, 635, 671, 698, 699, 749, 755, 815, 914, 978, 1011, 1141, 1161, 1190, 1205, 1232, 1316, 1529, 1595, 1634, 1760,...
[ "nonn" ]
A126122
[ 0, 1, 3, 14, 74, 572, 6564, 125120, 4147832, 247183688, 26814414976, 5327509126272, 1946813194004224, 1313879013920844500, 1.6445214243927265e+21, 3.833402238753872e+24, 1.6708198671847617e+28, 1.3668260108242226e+32 ]
[ "nonn" ]
A323979
[ 1, 0, -60, -80, 1680, 4704, -25660, -128640, 150420, 2062160, 2230548, -19194240, -63712740, 57664320, 724837020, 1055778256, -3865916310, -17164305600, -7987686380, 111558610080, 309981082824, -83708879920, -2310552888780, -4721178106560, 4129349973890, 39231750371...
[ "sign", "fini", "full" ]
A369882
[ 4, 4, 3, 1, 4, 7, 1, 8, 0, 5, 5, 9, 9, 4, 5, 3, 0, 9, 4, 1, 7, 2, 3, 2, 1, 2, 1, 4, 5, 8, 1, 7, 6, 5, 6, 8, 0, 7, 5, 5, 0, 0, 1, 3, 4, 3, 6, 0, 2, 5, 5, 2, 5, 4, 1, 2, 0, 6, 8, 0, 0, 0, 9, 4...
[ "nonn", "cons" ]
A220738
[ 1, 1, 1, 1, 2, 1, 1, 5, 4, 1, 1, 13, 22, 8, 1, 1, 32, 103, 72, 16, 1, 1, 85, 487, 712, 258, 32, 1, 1, 221, 2276, 7369, 5760, 949, 64, 1, 1, 578, 10653, 78418, 127288, 45421, 3403, 128, 1, 1, 1513, 49951, 824965, 279247...
[ "nonn", "tabl" ]
A057819
[ 4, 9, 32, 119, 444, 1657, 6184, 23079, 86132, 321449, 1199664, 4477207, 16709164, 62359449, 232728632, 868555079, 3241491684, 12097411657, 45148154944, 168495208119, 628832677532, 2346835502009, 8758509330504, 32687201820007 ]
[ "nonn", "easy" ]
A102459
[ 80519, 143, 77, 161, 77, 299, 437, 143, 77, 407, 611, 581, 319, 377, 161, 893, 209, 989, 989, 713, 583, 377, 1073, 533, 893, 143, 913, 209, 77, 713, 749, 209, 143, 319, 1133, 77, 1817, 899, 1633, 2033, 1943, 371, 913, 77, 1349, ...
[ "nonn" ]
A127638
[ 2, -2, 3, -2, 0, 5, 0, -3, 0, 7, -2, 0, 0, 0, 11, 2, -3, -5, 0, 0, 13, -2, 0, 0, 0, 0, 0, 17, 0, 0, 0, -7, 0, 0, 0, 19, 0, 0, -5, 0, 0, 0, 0, 0, 23, 2, -3, 0, 0, -11, 0, 0, 0, 0, 29, -2, 0, 0, 0, 0,...
[ "tabl", "easy", "sign" ]
A014269
[ 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, 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, 0, 0, 0, 0, 0, 0,...
[ "sign", "easy" ]
A176763
[ 59049, 1, 27, 3, 243, 6561, 6561, 27, 81, 9, 10460353203, 1162261467, 129140163, 31381059609, 177147, 1594323, 129140163, 177147, 2187, 19683, 387420489, 2187, 1162261467, 1594323, 243, 2541865828329, 1162261467, 27, 282429536481, 729, 43046721, 531441, ...
[ "base", "easy", "nonn" ]
A115901
[ 1, 2, 3, 4, 71, 116, 7271, 43585895 ]
[ "nonn", "base" ]
A034733
[ 1, 4, 8, 20, 32, 80, 128, 288, 528, 1088, 2048, 4288, 8192, 16640, 32896, 66112, 131072, 263424, 524288, 1050880, 2097664, 4198400, 8388608, 16786944, 33554688, 67125248, 134219776, 268469248, 536870912, 1073812480, 2147483648 ]
[ "nonn" ]
A260120
[ 1, 2, 14, 1, 12, 9, 30, 198, 69, 83, 66, 132, 44, 15, 4, 99, 71, 88, 339, 230, 10, 33, 167, 66, 42, 22, 126, 442, 318, 1185, 29, 289, 37, 174, 157, 44, 146, 301, 171, 403, 2, 5, 26, 699, 573, 144, 338, 33, 2032, 1212, ...
[ "nonn" ]
A077975
[ 1, -1, 0, 3, -5, 2, 9, -21, 16, 23, -81, 90, 37, -289, 432, -69, -941, 1874, -1071, -2685, 7504, -6961, -5913, 27882, -35891, -3817, 95472, -163437, 60331, 294050, -681255, 507867, 761488, -2631865, 2886111, 1268730, -9418571, 13922063, -19...
[ "sign", "easy" ]
A083699
[ 1, 1, 2, 5, 12, 53, 330, 2693, 11102, 69305, 2644692, 26516225, 373871842, 6008465697, 36424666024, 78857797745, 982718238964, 23664095532881, 2367392271527064, 85249785870507180, 6310851546689059000 ]
[ "frac", "nonn" ]
A240491
[ 0, 1, 0, 0, 1, 0, 1, 0, 2, 2, 4, 0, 9, 0, 8, 11, 15, 0, 39, 0, 44, 45, 28, 0, 175, 30, 50, 146, 207, 0, 486, 0, 427, 415, 144, 378, 1736, 0, 236, 1084, 2669, 0, 3022, 0, 3279, 4977, 600, 0, 12557, 1195, 6503, 5959,...
[ "nonn", "easy" ]
A383642
[ 2, 6, 9, 12, 16, 20, 28, 30, 33, 34, 35, 42, 48, 54, 56, 58, 65, 70, 72, 75, 84, 86, 90, 91, 96, 105, 110, 114, 120, 124, 126, 128, 132, 133, 152, 153, 156, 160, 162, 180, 182, 189, 198, 201, 205, 209, 210, 217, 224, 2...
[ "nonn" ]
A191958
[ 1, 3, 140, 245222 ]
[ "nonn", "more" ]
A160194
[ 1, 9, -311, -9855, 277041, 17946009, -381486279, -45642389679, 636016842465, 148858685615529, -904139249676759, -591663300859964500, -1426321263133495800, 2.7703472758770715e+21, 3.2201658639821937e+22, -1.491385092225497e+25, -3.2357041110244775e+26 ]
[ "sign", "frac" ]
A249900
[ 1, 2, 3, 4, 6, 2, 8, 9, 3, 4, 5, 7, 6, 2, 8, 11, 13, 9, 3, 4, 5, 10, 12, 7, 6, 2, 8, 11, 14, 15, 13, 9, 3, 4, 5, 10, 17, 19, 12, 7, 6, 2, 8, 11, 14, 23, 29, 15, 13, 9, 3, 4, 5, 10, 17, 16, 18, 19, 12,...
[ "nonn" ]
A348544
[ 189, 399, 459, 609, 729, 819, 969, 999, 1029, 1239, 1269, 1449, 1479, 1539, 1659, 1729, 1809, 1869, 1989, 2079, 2109, 2289, 2349, 2499, 2619, 2639, 2679, 2709, 2889, 2919, 3009, 3059, 3129, 3159, 3219, 3249, 3339, 3429, 3519, 3549, 3699...
[ "nonn", "base" ]
A244138
[ 0, 0, 0, 0, 0, 2, 0, 0, 4, -6, 0, 0, 8, -18, 36, 0, 0, 16, -54, 144, -320, 0, 0, 32, -162, 576, -1600, 3750, 0, 0, 64, -486, 2304, -8000, 22500, -54432, 0, 0, 128, -1458, 9216, -40000, 135000, -381024, 941192, 0, 0, 256, ...
[ "sign", "tabl" ]
A022796
[ 1, 2, 3, 4, 6, 8, 10, 13, 16, 19, 23, 27, 31, 36, 41, 46, 52, 58, 64, 71, 78, 85, 93, 101, 109, 117, 126, 135, 144, 154, 164, 174, 185, 196, 207, 219, 231, 243, 256, 269, 282, 296, 310, 324, 339, 354, 369, 384, 400, 41...
[ "nonn" ]
A146829
[ 1, 1, 1, 1, 1, 1, 1, 5, 29, 45, 85, 149, 631, 1787, 7789, 27255, 169603, 656441, 4413871, 19468207, 157401839 ]
[ "nonn" ]
A384055
[ 1, 1, 3, 3, 5, 3, 7, 7, 9, 5, 11, 9, 13, 7, 15, 15, 17, 9, 19, 15, 21, 11, 23, 21, 25, 13, 27, 21, 29, 15, 31, 31, 33, 17, 35, 27, 37, 19, 39, 35, 41, 21, 43, 33, 45, 23, 47, 45, 49, 25, 51, 39, 53, 27, 55, ...
[ "nonn", "easy", "mult" ]
A295359
[ 1, 3, 5, 14, 24, 41, 68, 112, 183, 298, 484, 786, 1275, 2064, 3342, 5409, 8754, 14166, 22923, 37092, 60019, 97116, 157138, 254257, 411398, 665658, 1077059, 1742720, 2819782, 4562505, 7382290, 11944798, 19327091, 31271892, 50598986 ]
[ "nonn", "easy" ]
A101818
[ 1, 1, 1, 1, 6, 2, 1, 21, 36, 6, 1, 60, 300, 240, 24, 1, 155, 1800, 3900, 1800, 120, 1, 378, 9030, 42000, 50400, 15120, 720, 1, 889, 40572, 357210, 882000, 670320, 141120, 5040, 1, 2040, 169400, 2610720, 11677680, 17781120, 9313920, ...
[ "nonn", "tabl" ]
A182802
[ 1, 2, 3, 4, 7, 9, 5, 11, 20, 26, 6, 15, 31, 55, 72, 8, 19, 42, 84, 148, 194, 10, 23, 53, 113, 224, 393, 515, 12, 28, 64, 142, 300, 592, 1036, 1357, 13, 32, 75, 171, 376, 791, 1557, 2721, 3563, 14, 36, 86, 200, 452, 9...
[ "nonn", "tabl", "changed" ]
A215175
[ -1, 0, 0, 1, -3, 4, 2, 9, 3, 16, 6, 25, 5, 36, 12, 49, 15, 64, 20, 81, 21, 100, 30, 121, 35, 144, 42, 169, 45, 196, 56, 225, 63, 256, 72, 289, 77, 324, 90, 361, 99, 400, 110, 441, 117, 484, 132, 529, 143, 576, 156, ...
[ "sign", "easy" ]
A115849
[ 17, 19, 21, 23, 25, 27, 29, 31, 34, 35, 38, 39, 42, 43, 46, 47, 49, 50, 51, 53, 54, 55, 57, 58, 59, 61, 62, 63, 68, 69, 70, 71, 76, 77, 78, 79, 81, 83, 84, 85, 86, 87, 89, 91, 92, 93, 94, 95, 98, 99, 100, 101, 10...
[ "nonn" ]
A231631
[ 0, 1, 1, 2, 1, 3, 1, 2, 3, 2, 1, 4, 1, 3, 3, 2, 1, 4, 1, 2, 3, 2, 1, 3, 2, 3, 6, 2, 1, 3, 1, 2, 3, 6, 2, 3, 1, 2, 6, 3, 1, 5, 1, 6, 5, 2, 1, 3, 3, 2, 4, 2, 1, 3, 2, 2, 6, 2, 1, 11, 1, 5, 5, ...
[ "nonn" ]
A338084
[ 1, 0, 2, 3, 20, 67, 596 ]
[ "nonn", "more", "hard" ]
A354781
[ 1, 3, 4, 12, 3, 19, 34, 64, 76, 136, 256, 768, 17, 1041, 50, 2080, 4096, 12288, 68, 16452, 200, 32896, 65536, 196608, 768, 262912, 524800, 1048576, 1049601, 2098176, 18, 4194322, 2096, 8390656, 16777216, 50331648, 12288, 67121152, 134225920...
[ "nonn", "base" ]
A329255
[ 1, 2, 3, 3, 4, 3, 5, 5, 6, 5, 6, 7, 7, 6, 8, 7, 6, 9, 9, 9, 10, 9, 9, 10, 11, 11, 9, 10, 12, 11, 12, 10, 13, 13, 12, 10, 14, 13, 12, 14, 15, 15, 15, 14, 15, 16, 15, 15, 14, 15, 17, 17, 15, 14, 15, 18, 17,...
[ "nonn", "tabf" ]