id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A308717
[ 3, 0, 4, 0, 1, 9, 1, 5, 5, 1, 6, 4, 2, 5, 5, 3, 0, 7, 5, 6, 0, 1, 8, 6, 0, 0, 2, 7, 9, 0, 0, 7, 5, 7, 2, 3, 3, 8, 2, 3, 8, 5, 4, 9, 0, 5, 8, 7, 9, 1, 7, 1, 6, 7, 7, 9, 4, 1, 6, 5, 9, 7, 5, 1...
[ "nonn", "cons" ]
A259685
[ 2, 4, 2, 56, 1, 2, 1, 1, 6, 1, 4, 4, 104, 2, 4, 1, 12, 4, 1, 8, 2, 6, 1, 2, 5, 1, 2, 204, 1, 2, 4, 1, 4, 3, 2, 1, 1, 12, 20, 3, 20, 4, 40, 3, 132, 6, 3, 2, 6, 2, 82, 17, 11, 4, 333, 14, 12, 6, 5, 2,...
[ "nonn" ]
A165380
[ 1, 40, 1012, 18900, 598332, 30346872, 3445935988 ]
[ "nonn" ]
A018935
[ 1, 5, 7, 9, 10, 13, 14, 17, 19, 23, 23, 30, 30, 34, 38, 41, 45, 48, 52, 59, 60, 64, 68, 70, 75, 83, 85, 91, 97, 102, 106, 109, 114, 120, 123, 130, 137, 140, 146, 152, 158, 161, 167, 175, 180, 187, 190, 196, 203, 211, ...
[ "nonn" ]
A257313
[ 10, 11, 55, 15, 21, 27, 39, 13, 91, 49, 105, 25, 45, 51, 69, 75, 81, 87, 111, 37, 259, 147, 117, 135, 115, 145, 165, 121, 187, 231, 159, 171, 19, 247, 285, 175, 189, 201, 67, 469, 301, 315, 205, 235, 265, 325, 345, 207, ...
[ "nonn" ]
A373945
[ 0, 1, 4, 6, 13, 19, 24, 116, 139, 6015, 39112, 65605, 94020, 1566318, 2446259, 3226100, 5897845, 85155749, 1628068810, 4244431852, 14977877039, 21118804085, 110954554736 ]
[ "nonn", "more" ]
A113926
[ 1, 1, 1, 1, 2, 1, 1, 2, 1, 4, 1, 2, 1, 4, 1, 1, 1, 3, 1, 1, 3, 1, 2, 1, 2, 5, 2, 1, 1, 2, 1, 2, 1, 2, 7, 2, 1, 2, 3, 2, 1, 6, 1, 2, 9, 1, 1, 3, 1, 1, 3, 1, 1, 9, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1...
[ "nonn", "tabl" ]
A124386
[ 1, 2, 3, 2, 5, -1, 7, 5, 7, -3, 11, -3, 13, 5, 7, 9, 17, -15, 19, 7, 11, 3, 23, -15, 9, 17, 33, -3, 29, -55, 31, 77, 47, -15, 45, -89, 37, 91, 79, -45, 41, -171, 43, 183, 189, 37, 47, -351, 155, 123, 373, 165, 53...
[ "sign" ]
A135268
[ 1, 1, 2, 4, 4, 8, 12, 18, 24, 30, 30, 40, 48, 60, 72, 84, 96, 112, 128, 146, 164, 184, 204, 226, 248, 272, 296, 322, 336, 364, 392, 422, 452, 484, 516, 550, 584, 620, 656, 694, 732, 772, 812, 854, 896, 940, 984, 1030, 10...
[ "easy", "nonn" ]
A065002
[ 2, 3, 7, 75, 86, 91, 1863, 2763, 3595, 5451, 6031, 7734, 8023, 9631, 35403, 41391, 53431, 63847, 64294, 148391, 205556, 237992, 374715, 381440, 404775, 442755, 510283, 546422, 917035, 1149111, 1291895, 1563158, 2197526, 2610182, 2693035, 2730524,...
[ "nonn" ]
A342920
[ 1, 1, 1, 2, 1, 2, 1, 8, 12, 2, 1, 4, 1, 2, 6, 16, 1, 24, 1, 4, 6, 2, 1, 26, 50, 2, 16, 4, 1, 62, 1, 10, 6, 2, 126, 48, 1, 2, 6, 18, 1, 24, 1, 4, 46, 2, 1, 22, 1486, 100, 6, 4, 1, 32, 94, 8, 6, 2, 1, ...
[ "nonn" ]
A144745
[ 9, 71, 4969, 24685991, 609398126966089, 3.713660771497769e+29, 1.3791276325761407e+59 ]
[ "nonn" ]
A265882
[ 1, 0, 2, 0, 2, 6, 0, 2, 24, 24, 0, 2, 152, 792, 120, 0, 2, 894, 30488, 39360, 720, 0, 2, 5748, 1584088, 18437120, 2396880, 5040, 0, 2, 38296, 90246168, 10856237680, 13734486480, 241012800, 40320, 0, 2, 263484, 5533645144, 7213744082208 ...
[ "nonn", "tabl" ]
A163003
[ 1, 8, 45, 234, 1193, 6049, 30616, 154861, 783150, 3960215, 20025500, 101261654, 512042141, 2589202874, 13092613725, 66204360820, 334770228305, 1692805481383, 8559872259604, 43284012160451, 218870755473698, 1106746006355201, 5596392811360844, 28298825854292256 ]
[ "nonn" ]
A035762
[ 1, 1250, 261250, 22049250, 1012597250, 29557550050, 604033925250, 9235138753250, 110890799925250, 1085175523649250, 8910448028600450, 62842745595873250, 388036691221877250, 2131248564724283000, 10551253249450810000, 47616507731413156000, 197765489522704120000 ]
[ "nonn", "easy" ]
A298558
[ 5, 604, 3079, 19843, 138774, 983554, 6852589, 48019258, 337105690, 2364533628, 16590006949, 116460022333, 817434984411, 5737251249817, 40271223099145, 282675763183686, 1984158776679139, 13927395646417520, 97760842271830450 ]
[ "nonn" ]
A313639
[ 1, 5, 10, 14, 20, 26, 30, 36, 42, 46, 51, 56, 61, 66, 70, 76, 82, 86, 92, 98, 102, 107, 112, 117, 122, 126, 132, 138, 142, 148, 154, 158, 163, 168, 173, 178, 182, 188, 194, 198, 204, 210, 214, 219, 224, 229, 234, 238, 24...
[ "nonn" ]
A353278
[ 1, 1, 1, 1, 1, 2, 1, 3, 1, 1, 1, 4, 1, 5, 2, 2, 1, 6, 1, 7, 1, 3, 1, 8, 1, 9, 3, 10, 1, 4, 1, 11, 4, 5, 2, 1, 1, 12, 2, 6, 1, 13, 1, 14, 5, 2, 1, 15, 1, 16, 6, 17, 1, 18, 1, 19, 3, 20, 1, 21, 1, ...
[ "nonn" ]
A231546
[ 15, 207, 958, 1335, 1365, 1635, 2686, 2975, 4365, 14842, 18874, 19359, 20146, 24958, 33999, 36567, 42819, 56565, 64666, 74919, 79827, 79834, 84135, 92686, 109215, 111507, 116938, 122074, 138238, 147455, 161002, 162603, 166935, 174718, 190774, 193...
[ "nonn" ]
A044138
[ 49, 98, 147, 196, 245, 294, 343, 392, 441, 490, 539, 588, 637, 686, 735, 784, 833, 882, 931, 980, 1029, 1078, 1127, 1176, 1225, 1274, 1323, 1372, 1421, 1470, 1519, 1568, 1617, 1666, 1715, 1764, 1813, 1862, 1911, 1960, 2009, 2058, 21...
[ "nonn", "base" ]
A013169
[ 2, 9, 353, 36799, 7537817, 2561794059, 1303341700269, 927157598991519, 878628923948350100, 1.0698556752930794e+21, 1.627609755057104e+24, 3.025319595854387e+27, 6.746132863265524e+30 ]
[ "nonn" ]
A144264
[ 1, 2, 12, 18, 20, 21, 29, 36, 59, 66, 71, 73, 88, 90, 94, 95, 103, 104, 109, 128, 130, 131, 161, 166, 170, 209, 234, 250, 292, 299, 307, 318, 332, 353, 362, 375, 377, 391, 481, 509, 556, 557, 564, 577, 602, 619, 630, 665, ...
[ "nonn" ]
A198652
[ 3, 488, 98467, 39898934, 21787578805, 15022218265442 ]
[ "nonn" ]
A053825
[ 1, -9, -28, 8, -126, 252, -344, 0, 27, 1134, -1332, -224, -2198, 3096, 3528, 0, -4914, -243, -6860, -1008, 9632, 11988, -12168, 0, 125, 19782, 0, -2752, -24390, -31752, -29792, 0, 37296, 44226, 43344, 216, -50654, 61740, 61544, 0, -6892...
[ "sign", "mult" ]
A274027
[ 1, 162, 324, 3888, 11664, 18750, 31250, 32768, 38416, 40000, 160000, 167042, 168750, 253125, 373248, 607500, 911250, 1037232 ]
[ "nonn", "more" ]
A268403
[ 1, 3, 9, 19, 41, 71, 113, 171, 241, 319, 401, 503, 633, 823, 1033, 1343, 1673, 2031, 2413, 2855, 3317, 3795, 4357, 5015, 5757, 6595, 7457, 8427, 9465, 10687, 11969, 13287, 14905, 16715, 18585, 20563, 22601, 24663, 26761, 29003, 31401, ...
[ "nonn" ]
A083890
[ 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 2, 1, 1, 2, 0, 0, 1, 0, 0, 2, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 2, 0, 1, 1, 1...
[ "nonn", "base" ]
A051154
[ 7, 73, 262657, 18014398643699710, 5.846006549323612e+48 ]
[ "nonn", "easy" ]
A215081
[ 2, 6, 15, 10, 21, 14, 55, 0, 33, 22, 39, 26, 85, 0, 51, 34, 57, 38, 115, 0, 69, 46, 203, 0, 145, 0, 87, 58, 93, 62, 259, 0, 185, 0, 111, 74, 205, 0, 123, 82, 129, 86, 235, 0, 141, 94, 371, 0, 265, 0, 159, 106, 41...
[ "nonn" ]
A072921
[ 1, 2, 5, 13, 25, 44, 71, 106, 148, 203, 263, 334, 415, 506, 608, 724, 853, 998, 1169, 1357, 1561, 1778, 2018, 2269, 2539, 2828, 3137, 3460, 3796, 4157, 4535, 4930, 5341, 5765, 6212, 6670, 7147, 7643, 8159, 8698, 9268, 9863, 10484, ...
[ "nonn", "base" ]
A120873
[ 1, 1, 2, 3, 1, 4, 2, 5, 6, 3, 7, 8, 1, 9, 4, 10, 11, 2, 12, 5, 13, 14, 6, 15, 16, 3, 17, 7, 18, 19, 8, 20, 21, 1, 22, 9, 23, 24, 4, 25, 10, 26, 27, 11, 28, 29, 2, 30, 12, 31, 32, 5, 33, 13, 34, 35, 14, ...
[ "nonn" ]
A328058
[ 5, 11, 13, 17, 29, 43, 47, 61, 67, 71, 73, 89, 101, 103, 107, 109, 127, 151, 181, 191, 197, 223, 227, 241, 251, 269, 277, 283, 317, 349, 359, 373, 397, 409, 421, 433, 457, 461, 467, 487, 521, 541, 569, 571, 631, 643, 647, ...
[ "nonn" ]
A191445
[ 1, 3, 2, 6, 5, 4, 12, 10, 8, 7, 22, 19, 15, 13, 9, 39, 34, 27, 24, 17, 11, 69, 60, 48, 43, 31, 20, 14, 121, 105, 84, 76, 55, 36, 25, 16, 211, 183, 147, 133, 96, 64, 45, 29, 18, 367, 318, 256, 232, 168, 112, 79, 5...
[ "nonn", "tabl" ]
A195966
[ 1, 1, 14, 48, 193, 417, 804, 2745, 9547, 24176, 61074, 170047, 498749, 1412003, 3830458, 10425200, 29408888, 82593837, 229097068, 632720280, 1758152920, 4903602060, 13659767887, 37909433089, 105292824517, 292891120663 ]
[ "nonn" ]
A328477
[ 1, 2, 3, 4, 5, 6, 7, 4, 8, 9, 10, 11, 12, 6, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 4, 8, 9, 10, 11, 28, 9, 29, 30, 31, 32, 33, 11, 31, 32, 34, 35, 36, 18, 37, 38, 39, 40, 41, 2...
[ "nonn" ]
A165412
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520 ]
[ "fini", "full", "nonn", "easy" ]
A152845
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3, 3, 1, 1, 3...
[ "easy", "nonn", "tabf" ]
A149907
[ 1, 2, 5, 15, 45, 143, 483, 1644, 5848, 21178, 77716, 290588, 1097869, 4182986, 16151078, 62672479, 245500460, 967557537, 3835676351, 15285272154, 61245921696, 246253276079, 995260779078, 4034182783045, 16419400425310, 67016453054374, 274452294823460, 11266459333...
[ "nonn", "walk" ]
A188655
[ 1, 8, 6, 8, 5, 1, 7, 0, 9, 1, 8, 2, 1, 3, 2, 9, 7, 6, 4, 3, 7, 3, 0, 7, 3, 7, 5, 5, 8, 2, 3, 4, 9, 8, 6, 4, 8, 7, 5, 0, 4, 3, 2, 1, 9, 1, 2, 8, 1, 7, 4, 8, 7, 3, 7, 5, 7, 0, 1, 5, 1, 0, 1, 8...
[ "nonn", "cons" ]
A131140
[ 1, 1, 2, 9, 11, 19, 83, 99, 172, 1100, 1244, 2250, 8687, 10683, 18173, 67950, 82785, 140825, 665955, 780030, 1367543, 4867750, 6027860, 10149291, 35453711, 43581422 ]
[ "nonn", "more" ]
A077707
[ 11, 23, 97, 391, 188, 2366, 2269, 2042, 2036, 372, 4742, 3438, 43871, 6642, 47957, 158388, 31666, 15736, 134046, 60877, 90061, 69122, 249766, 123726, 269358, 162881, 1426093, 32082, 1208059, 668822, 541654, 143087, 1399261, 1202267 ]
[ "base", "nonn" ]
A121522
[ 1, 1, 1, 1, 3, 1, 1, 5, 6, 1, 1, 8, 15, 9, 1, 1, 11, 30, 34, 12, 1, 1, 14, 55, 85, 62, 15, 1, 1, 17, 89, 185, 200, 99, 18, 1, 1, 20, 132, 365, 510, 402, 145, 21, 1, 1, 23, 184, 650, 1160, 1220, 718, 200, 24, ...
[ "nonn", "tabl" ]
A131364
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0...
[ "nonn", "base" ]
A004216
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1...
[ "nonn", "easy" ]
A271612
[ 1, 4, 17, 114, 2571, 42702, 216318, 5622392, 1491326272, 101843558868, 1038614548176, 131929454285752, 334070494079203800, 109915013016304830000, 3.1476129789517077e+21, 2.069163709506683e+24, 4.465532045846721e+28, 7.505177286171483e+31 ]
[ "nonn" ]
A035547
[ 0, 0, 0, 0, 0, 0, 1, 1, 1, 2, 4, 5, 7, 10, 14, 19, 25, 33, 44, 57, 74, 95, 120, 152, 193, 241, 299, 372, 462, 567, 695, 850, 1037, 1259, 1523, 1839, 2219, 2663, 3189, 3814, 4552, 5415, 6433, 7625, 9023, 10656, 12562, 14781...
[ "nonn" ]
A012809
[ 1, -1, 25, -1209, 68945, -7692881, 1181481769, -242740782153, 66317255314721, -22739603323053600, 9634203397240830000, -4.937246969845635e+21, 3.0076273229967816e+24, -2.1491252948379301e+27, 1.7797072472118784e+30 ]
[ "sign" ]
A262581
[ 1, 12, 123, 1234, 12345, 123456, 1234567, 12345678, 123456789, 12345678910, 1234567891012, 123456789101213, 12345678910121314, 1234567891012131300, 123456789101213140000, 1.2345678910121314e+22, 1.2345678910121315e+24, 1.2345678910121314e+26, 1.2345678910121314e+28 ]
[ "nonn", "base" ]
A027060
[ 1, 1, 3, 11, 35, 107, 319, 935, 2713, 7825, 22491, 64523, 184945, 530001, 1519151, 4356471, 12501301, 35901325, 103188123, 296844379, 854701935, 2463133311, 7104685935, 20510632575, 59262772629, 171373598341, 495968905267 ]
[ "nonn" ]
A287679
[ 1, 2, 12, 408, 13860, 470832, 15994428, 543339720, 18457556052, 627013566048, 21300003689580, 723573111879672, 24580185800219268, 835002744095575400, 963592443113182200000, 3.2733777552734746e+22, 1.1119848443498682e+24, 1.2832295467873046e+27 ]
[ "nonn" ]
A253357
[ 2, 3, 3, 7, 6, 3, 5, 3, 2, 9, 7, 4 ]
[ "nonn", "cons", "more" ]
A129345
[ 2, 9, 12, 53, 70, 309, 408, 1801, 2378, 10497, 13860, 61181, 80782, 356589, 470832, 2078353, 2744210, 12113529, 15994428, 70602821, 93222358, 411503397, 543339720, 2398417561, 3166815962, 13979001969, 18457556052, 81475594253, 107578520350, 474874563549 ]
[ "easy", "nonn" ]
A355085
[ 1, 1, 5, 128, 13572, 5462934, 7948602294, 40533916402440, 709019302729063300, 4.186369046302319e+22, 8.239820880700969e+27, 5.352039696398504e+33, 1.1377141201027328e+40 ]
[ "nonn" ]
A164392
[ 1, 2, 4, 8, 14, 25, 44, 78, 137, 241, 423, 743, 1304, 2289, 4017, 7050, 12372, 21712, 38102, 66865, 117340, 205918, 361361, 634145, 1112847, 1952911, 3427120, 6014177, 10554145, 18521234, 32502500, 57037912, 100094558, 175653705, 308250764, 54094...
[ "nonn", "easy", "walk" ]
A333071
[ 0, 0, 1, 4, 16, 63, 239, 895, 3343, 12503, 46905, 176620, 667664, 2533699, 9650737, 36887383, 141448958, 544022417, 2098082719, 8111788699, 31434420426, 122068414186, 474932563378, 1851059631879, 7226108097869, 28250493771358, 110594307388370, 433488248791630 ]
[ "nonn" ]
A163721
[ 45, 1059, 14839, 204461, 2938865 ]
[ "nonn", "more" ]
A260237
[ 0, 1, -1, -1, -1, 1, 1, 11, -1, -1, 0, -3, -9, 5, 1, 0, 3, 81, 7, -73, -1, 0, 3, 73, -1261, -1183, 53, 1, 0, -3, -1231, 5251, 8989, 1451, -731, -1, 0, 0, 7, 397, -12491, -19877, -15047, 1567, 1, 0, 0, 0, -7, -1483, 5...
[ "tabl", "sign", "frac" ]
A070497
[ 0, 1, 8, 27, 29, 20, 6, 28, 22, 29, 20, 1, 13, 27, 14, 15, 1, 13, 22, 34, 20, 21, 8, 22, 34, 15, 6, 13, 7, 29, 15, 6, 8, 27, 34, 0, 1, 8, 27, 29, 20, 6, 28, 22, 29, 20, 1, 13, 27, 14, 15, 1, 13, 22, 34, 20,...
[ "nonn", "easy" ]
A351209
[ 1, 0, 9, 5, 8, 7, 2, 6, 9, 1, 1, 3, 5, 2, 4, 4, 3, 8, 0, 1, 6, 0, 0, 1, 9, 1, 2, 8, 0, 7, 2, 5, 4, 8, 6, 5, 2, 7, 9, 9, 7, 5, 1, 3, 6, 3, 5, 1, 9, 1, 9, 9, 2, 4, 8, 8, 7, 9, 4, 0, 6, 8, 7, 7...
[ "cons", "nonn" ]
A282512
[ 1, 4, 12, 24, 72, 360, 360, 2520, 504, 1008, 336, 1680, 1680, 18480, 18480, 92400, 1201200, 10810800, 10810800, 10810800, 21621600, 21621600, 367567200, 52509600, 52509600, 997682400, 997682400, 997682400, 6983776800, 6983776800, 6983776800, 160626866400...
[ "nonn", "frac" ]
A161656
[ 0, 2, 3, 4, 5, 5, 7, 8, 9, 7, 11, 10, 13, 9, 8, 16, 17, 15, 19, 14, 20, 13, 23, 20, 25, 15, 27, 27, 29, 30, 31, 32, 28, 19, 24, 35, 37, 21, 32, 35, 41, 36, 43, 39, 40, 25, 47, 45, 49, 49, 40, 45, 53, 50, 48, ...
[ "nonn" ]
A383221
[ 0, 0, 0, 1, 26, 595, 14155, 363944, 10206700, 312193524, 10380710220, 373619597736, 14490750497432, 603032132116336, 26818416624389936, 1269883590624201200, 63806666669904904000, 3.391580011320726e+21, 1.9017444304255832e+23, 1.1220246602286014e+25 ]
[ "nonn" ]
A234581
[ 0, 0, 0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 0, 1, 0, 1, 1, 0, 2, 1, 0, 3, 1, 0, 4, 1, 0, 5, 1, 0, 0, 2, 0, 1, 2, 0, 2, 2, 0, 3, 2, 0, 4, 2, 0, 5, 2, 0, 0, 3, 0, 1, 3, 0, 2, 3, 0, 3, 3, 0, 4, 3, 0...
[ "nonn", "base" ]
A280777
[ 1, 2, 8, 16, 128, 1280, 3072, 215040, 3440640, 2293760, 137625600, 201850880, 72666316800, 1889324236800, 52901078630400, 176336928768000, 135426761293824, 191854578499584000, 1593868805996544000, 787371190162292700000, 3.149484760649171e+22, 2.9395191099392262e+22 ]
[ "nonn", "frac" ]
A043092
[ 0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 37, 38, 39, 40, 41, 48, 49, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 6...
[ "nonn", "base" ]
A289401
[ 1, 1, 11, 1111, 1111, 101111, 1111111, 11111111, 1111111, 1111111111, 11101111111, 110111111111, 1111111111111, 1111111111111, 101111111111111, 111011111111111, 1101111111111111, 111111111111111100, 11111011111111112, 11011111111111110000 ]
[ "nonn", "easy" ]
A017519
[ 100000000000, 350277500542221, 36028797018963970, 929293739471222700, 11384956040305711000, 87507831740087900000, 488595558857835540000, 2.1612837034654905e+21, 8.00731350749796e+21, 2.5804264053054076e+22 ]
[ "nonn", "easy" ]
A334702
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 4, 1, 0, 0, 4, 20, 20, 4, 0, 0, 10, 56, 84, 56, 10, 0, 0, 20, 120, 220, 220, 120, 20, 0, 0, 35, 220, 455, 560, 455, 220, 35, 0, 0, 56, 364, 816, 1140, 1140, 816, 364, 56, 0...
[ "nonn", "tabl" ]
A088947
[ 1, 2, 5, 7, 10, 13, 25, 27, 31, 37, 151, 277, 385, 451, 902, 6314, 6601, 16627, 24673, 30371, 31451, 32338, 36058, 41173, 44083, 44215, 47322, 52580, 558304, 659879, 744007, 909634 ]
[ "nonn", "base" ]
A367721
[ 1, 1, 1, -5, -23, 1, 601, 7771, 26545, -401183, -6965999, -42828389, 528611161, 15543020065, 141983039017, -2393449681349, -83586615493919, -708151768946879, 15447932991283104, 635290179334026400, 7146984268771159000, -162583738763505960000 ]
[ "sign" ]
A383352
[ 1, 0, 4, 0, 6, 16, 0, 8, 32, 52, 0, 10, 63, 123, 158, 0, 12, 100, 264, 384, 440, 0, 14, 158, 506, 876, 1086, 1170, 0, 16, 224, 896, 1800, 2500, 2836, 2956, 0, 18, 317, 1491, 3489, 5359, 6542, 7046, 7211, 0, 20, 420, 2372...
[ "nonn", "tabl" ]
A317690
[ 1, -1, 2, 4, 1, -4, -2, -2, -6, 4, -4, 0, -1, -1, 2, -4, 4, 8, -2, 2, 2, -4, 2, -8, 9, 6, 10, -8, -4, 4, 6, 4, -4, -4, 0, 16, -6, 1, -16, -4, 1, -12, -12, -2, 10, -8, 4, 8, -14, -4, -6, 12, -8, 4, 14, 2, ...
[ "sign" ]
A277744
[ 1, 4, 2, 1, 6, 3, 5, 4, 2, 3, 5, 6, 1, 4, 2, 1, 6, 3, 5, 6, 1, 4, 2, 3, 5, 4, 2, 1, 6, 3, 5, 4, 2, 3, 5, 6, 1, 4, 2, 3, 5, 4, 2, 1, 6, 3, 5, 6, 1, 4, 2, 1, 6, 3, 5, 4, 2, 3, 5, 6, 1, 4, 2, 1...
[ "nonn" ]
A209013
[ 12, 130, 1430, 15724, 172936, 1901964, 20918008, 230058424, 2530206824, 27827480224, 306049553920, 3365965156848, 37019238613696, 407141477256160, 4477784761704800, 49247147465796160, 541625304181537800 ]
[ "nonn" ]
A257270
[ 9300, 119716, 119716, 1257600, 2292196, 1257600, 13089924, 29746116, 29746116, 13089924, 121905264, 380991361, 358153488, 380991361, 121905264, 1125468304, 3966480400, 4497848356, 4497848356, 3966480400, 1125468304, 9711591328 ]
[ "nonn", "tabl" ]
A191510
[ 1, 9, 648, 360000, 1518750000, 48243443062500, 11480517255997440000, 2.0400479323264014e+25, 2.7009055953131853e+32, 2.659991168567771e+40, 1.9464564507161244e+49 ]
[ "easy", "nonn", "nice" ]
A082836
[ 2, 2, 4, 9, 3, 4, 7, 5, 3, 1, 1, 7, 0, 5, 9, 4, 5, 3, 9, 8, 1, 7, 6, 2, 2, 6, 9, 1, 5, 3, 3, 9, 7, 7, 5, 9, 7, 4, 0, 0, 5, 9, 1, 5, 5, 4, 1, 6, 7, 2, 5, 1, 2, 3, 6, 1, 7, 9, 1, 4, 6, 0, 4, 4...
[ "nonn", "cons", "base" ]
A076022
[ 1, 4, 2, 9, 3, 8, 10, 7, 5, 11, 6, 15, 12, 14, 20, 16, 19, 13, 17, 21, 18, 26, 23, 25, 31, 22, 27, 32, 40, 30, 35, 28, 24, 34, 29, 39, 37, 41, 44, 33, 45, 36, 50, 42, 38, 65, 43, 46, 51, 47, 57, 52, 48, 54, 6...
[ "easy", "nonn" ]
A090468
[ 545587687, 852480757, 1048438561, 1150849009, 1323457987, 1745980517, 1756123441, 1785398401, 1798736161, 1892507347, 1937020021, 2002155601, 2136716521, 2150905573, 2229004913, 2548101601, 2671514917, 2838761021 ]
[ "nonn" ]
A165378
[ 33, 94, 158, 243, 346, 467, 606, 763, 938, 1131, 1342, 1571, 1818, 2083, 2366, 2667, 2986, 3323, 3678, 4051, 4442, 4851, 5278, 5723, 6186, 6667, 7166, 7683, 8218, 8771, 9342, 9931, 10538, 11163, 11806, 12467, 13146, 13843, 14558, 15291, ...
[ "nonn" ]
A068403
[ 180, 240, 360, 420, 480, 504, 540, 600, 660, 720, 780, 840, 900, 960, 1008, 1080, 1200, 1260, 1320, 1344, 1440, 1512, 1560, 1584, 1620, 1680, 1800, 1848, 1872, 1890, 1920, 1980, 2016, 2040, 2100, 2160, 2184, 2280, 2340, 2352, 2376, 24...
[ "easy", "nonn" ]
A291412
[ 1, 4, 10, 24, 62, 156, 391, 987, 2484, 6252, 15744, 39636, 99788, 251237, 632525, 1592480, 4009326, 10094104, 25413498, 63982496, 161086011, 405559431, 1021059816, 2570679048, 6472089792, 16294506424, 41023988824, 103284359545, 260034658537, 654678248796 ]
[ "nonn", "easy" ]
A127918
[ 3, 12, 60, 168, 660, 1092, 2448, 3420, 6072, 12180, 14880, 25308, 34440, 39732, 51888, 74412, 102660, 113460, 150348, 178920, 194472, 246480, 285852, 352440, 456288, 515100, 546312, 612468, 647460, 721392, 1024128, 1123980, 1285608 ]
[ "nonn", "easy" ]
A148082
[ 1, 1, 2, 4, 9, 24, 65, 197, 590, 1831, 5907, 19246, 65628, 223075, 772202, 2715962, 9613099, 34850427, 126250204, 462501869, 1709044861, 6342910025, 23890157291, 89977511284, 341462174862, 1302976354195, 4987822604239, 19285789090167, 74581371919137, 2900089...
[ "nonn", "walk" ]
A052219
[ 5, 14, 23, 32, 41, 50, 104, 113, 122, 131, 140, 203, 212, 221, 230, 302, 311, 320, 401, 410, 500, 1004, 1013, 1022, 1031, 1040, 1103, 1112, 1121, 1130, 1202, 1211, 1220, 1301, 1310, 1400, 2003, 2012, 2021, 2030, 2102, 2111, 2120, ...
[ "nonn", "base", "easy" ]
A265767
[ 11, 37, 67, 97, 157, 307, 337, 367, 397, 487, 547, 757, 787, 907, 967, 997, 1117, 1567, 1657, 1747, 1867, 1987, 2287, 2437, 2617, 2707, 2857, 2887, 3037, 3067, 3217, 3307, 3457, 3547, 3637, 3697, 3847, 4057, 4297, 4597, 4957, 4987, ...
[ "nonn", "frac" ]
A164655
[ 1, 28, 3527, 1213136, 32797547, 43684790932, 96017087247229, 96044168328256, 471956397645187840, 3.2375979730082574e+21, 462561506842656960000, 5.628425850334528e+24, 7.035960587989194e+26, 1.8998011529681232e+28, 4.6336057105195475e+32 ]
[ "nonn", "frac", "easy" ]
A135121
[ 0, 1, 6, 7, 10, 11, 60, 61, 180, 181, 285, 300, 301, 575, 687, 754, 826, 827, 882, 883, 900, 901, 910, 911, 1254, 1305, 1311, 1326, 1327, 1335, 1377, 1383, 1386, 1387, 1395, 1431, 1506, 1507, 1532, 1626, 1627, 1650, 1651, 1890, ...
[ "nonn", "base" ]
A265061
[ 1, 3, 5, 8, 12, 17, 24, 33, 45, 61, 83, 114, 155, 210, 286, 389, 529, 720, 979, 1331, 1810, 2462, 3349, 4554, 6193, 8423, 11455, 15579, 21188, 28815, 39188, 53296, 72483, 98577, 134064, 182327, 247965, 337232, 458636, 623745, 848292, ...
[ "nonn", "easy" ]
A223671
[ 16, 256, 1723, 6454, 18980, 49561, 119150, 267643, 567197, 1142224, 2198273, 4062420, 7238132, 12477929, 20877528, 33995513, 54002935, 83867606, 127578211, 190413722, 279263958, 403007495, 572953490, 803354343, 1111996481, 1520876908 ]
[ "nonn" ]
A232871
[ 7, 14, 25, 39, 57, 81, 112, 151, 195, 247, 309, 382, 467, 558, 661, 778, 910, 1054, 1211, 1384, 1574, 1783, 2006, 2246, 2506, 2787, 3090, 3408, 3748, 4112, 4501, 4915, 5349, 5807, 6293, 6808, 7352, 7918, 8513, 9139, 9798, 10489, 112...
[ "nonn" ]
A166049
[ 1, 5, 9, 13, 21, 25, 37, 49, 81, 85, 93, 121, 165, 169, 225, 289, 361, 441, 529, 625, 729, 841, 961, 1089, 1225, 1369, 1521, 1681, 1849, 2025, 2209, 2401, 2601, 2809, 3025, 3249, 3481, 3721, 3969, 4225, 4489, 4761, 5041, 5329, 5...
[ "nonn" ]
A290853
[ 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 101100000, 1011000000, 10110000000, 101100000000, 1011100000000, 10111000000000, 101110000000000, 1011100000000000, 10111000000000000, 101111000000000000, 1011110000000000000, 10111111000000000000 ]
[ "nonn", "easy" ]
A269323
[ 540365, 945813, 1202680, 1695260, 1958629, 3018569, 3236657, 3687441, 4441560, 5512252, 5571377, 5701693, 6027557, 6049356, 6054060, 6274609, 6366029, 6501608, 6773557, 7573868, 8243464, 8251521, 9054177, 9162577, 9967837 ]
[ "nonn", "hard" ]
A177097
[ 30, 570, 5970, 59970, 599970, 5999970, 59999970, 599999970, 5999999970, 59999999970, 599999999970, 5999999999970, 59999999999970, 599999999999970, 5999999999999970, 59999999999999970, 600000000000000000 ]
[ "nonn", "easy" ]
A329865
[ 0, 8, 12, 14, 17, 24, 27, 28, 35, 36, 39, 47, 49, 51, 54, 57, 61, 70, 73, 78, 80, 99, 122, 130, 156, 175, 184, 189, 190, 198, 204, 207, 208, 215, 216, 226, 228, 235, 243, 244, 245, 261, 271, 283, 295, 304, 313, 321, 322,...
[ "nonn" ]
A032969
[ 1, 2, 3, 4, 5, 9, 10, 11, 12, 16, 17, 18, 19, 23, 24, 25, 26, 30, 31, 32, 33, 54, 55, 59, 60, 61, 62, 66, 67, 68, 69, 74, 75, 76, 77, 96, 97, 98, 102, 103, 104, 105, 110, 111, 112, 113, 117, 118, 119, 138, 139, 140...
[ "nonn", "base" ]
A278332
[ 1, 2, 9, 88, 905, 12666, 220297, 4506440, 104707521, 2758506850 ]
[ "nonn", "more" ]
A204685
[ 1, 2, 2, 4, 15, 4, 12, 159, 159, 12, 40, 2191, 6451, 2191, 40, 143, 31168, 287379, 287379, 31168, 143, 528, 447343, 12711292, 40919141, 12711292, 447343, 528, 1979, 6427791, 563046972, 5770321516, 5770321516, 563046972, 6427791, 1979, 7466, 9...
[ "nonn", "tabl" ]
A246101
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 24, 27, 30, 33, 36, 40, 44, 48, 52, 56, 60, 65, 70, 75, 80, 85, 90, 99, 108, 120, 132, 144, 160, 176, 192, 208, 224, 240, 260, 280, 300, ...
[ "nonn" ]