id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A291766
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 10, 14, 15, 16, 17, 18, 17, 19, 20, 17, 21, 22, 23, 24, 19, 25, 26, 27, 28, 29, 30, 31, 32, 33, 19, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 34, 45, 46, 29, 47, 4...
[ "nonn" ]
A185167
[ 19, 43, 109, 1117, 3889, 40177, 139969, 326593, 839809, 4718557, 5038849, 5925313, 18874333, 52068097, 1088391169, 1874451457, 6115248577, 24461134273, 1410554953729, 2429289086977, 31701630016513, 118486616113153 ]
[ "nonn" ]
A123735
[ 0, 0, -1, -1, 0, 1, -2, 3, 0, -1, 0, 4, -5, 0, 1, 2, -3, -6, 7, 0, -1, 3, -12, 10, 8, -9, 0, 1, 0, -9, 30, -21, -10, 11, 0, -1, -3, 12, 11, -56, 36, 12, -13, 0, 1, -4, 30, -60, -1, 90, -55, -14, 15, 0, -1, ...
[ "uned", "sign" ]
A190117
[ 0, 2, 5, 21, 26, 56, 63, 159, 213, 283, 294, 486, 499, 625, 745, 1257, 1274, 1652, 1671, 2151, 2361, 2647, 2670, 3726, 3976, 4366, 5095, 5991, 6020, 6950, 6981, 9541, 10003, 10649, 11069, 13229, 13266, 14064, 14688, 17408, 17449, 1917...
[ "nonn" ]
A152748
[ 2, 8, 9, 0, 6, 4, 8, 2, 6, 3, 1, 7, 8, 8, 7, 8, 5, 9, 2, 6, 6, 2, 1, 1, 0, 0, 7, 7, 0, 0, 2, 6, 3, 5, 6, 6, 1, 9, 1, 2, 9, 4, 6, 1, 5, 9, 8, 5, 6, 9, 6, 0, 0, 3, 6, 2, 6, 3, 4, 1, 5, 6, 7, 7...
[ "nonn", "cons" ]
A119293
[ 3, 26, 339, 4070, 55213, 632418, 7133747, 82051293, 1041785731, 12182327373, 137771632675, 1525041000685 ]
[ "more", "nonn", "base" ]
A038454
[ 111111111111, 1011111111111, 1101111111111, 1110111111111, 1111011111111, 1111101111111, 1111110111111, 1111111011111, 1111111101111, 1111111110111, 1111111111011, 1111111111101, 1111111111110, 10011111111111, 10101111111111, 10110111111111, 10111011111111, 10111101111111 ]
[ "nonn", "easy" ]
A115676
[ 4, 9, 121, 169, 400, 900, 961, 968, 3481, 3721, 4000, 9000, 10201, 12100, 12167, 12544, 12769, 16384, 16900, 17161, 31684, 40000, 79507, 90000, 90601, 94249, 96100, 96721, 96800, 121000, 150544, 169000, 175616, 192200, 194672, 195112 ]
[ "nonn", "base" ]
A154079
[ 6, 23, 8, 23, 7, 21, 5, 14, 5, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4 ]
[ "nonn" ]
A061743
[ 11, 14, 15, 17, 19, 20, 23, 24, 26, 27, 29, 31, 32, 34, 35, 38, 39, 41, 43, 44, 47, 48, 49, 50, 51, 53, 54, 55, 56, 59, 62, 63, 64, 65, 67, 68, 69, 71, 74, 75, 76, 77, 79, 80, 83, 84, 86, 87, 89, 90, 91, 92, 94, ...
[ "nonn" ]
A083740
[ 29341, 46657, 75361, 88831, 115921, 146611, 162401, 252601, 294409, 314821, 334153, 340561, 399001, 410041, 488881, 512461, 530881, 552721, 658801, 721801, 852841, 954271, 1024651, 1152271, 1193221, 1314631, 1461241, 1569457, 1615681 ]
[ "easy", "nonn" ]
A043410
[ 32, 81, 130, 179, 200, 207, 214, 221, 224, 225, 226, 227, 229, 230, 235, 242, 277, 326, 375, 424, 473, 522, 543, 550, 557, 564, 567, 568, 569, 570, 572, 573, 578, 585, 620, 669, 718, 767, 816, 865, 886, 893, 900, 907, 910, 911...
[ "nonn", "base" ]
A206216
[ 81, 7313, 1782191, 1827047303, 7626209039519, 162241662044855140 ]
[ "nonn" ]
A345198
[ 223, 631, 1471, 2203, 2671, 3319, 4513, 4621, 5059, 5179, 8929, 9643, 9661, 11131, 11149, 12391, 12781, 12841, 14143, 14341, 14419, 15511, 15823, 15901, 16369, 17359, 19333, 19489, 19603, 19801, 20269, 20929, 21031, 22531, 23593, 23929, 24571, ...
[ "nonn", "base" ]
A343511
[ 1, 2, 2, 6, 2, 10, 2, 42, 6, 10, 2, 146, 2, 10, 10, 1806, 2, 146, 2, 146, 10, 10, 2, 23226, 6, 10, 42, 146, 2, 314, 2, 3263442, 10, 10, 10, 42814, 2, 10, 10, 23226, 2, 314, 2, 146, 146, 10, 2, 542731938, 6, 146, 10, ...
[ "nonn" ]
A117283
[ 1, 2, 3, 5, 7, 11, 12, 13, 14, 16, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 63, 67, 71, 73, 79, 81, 83, 89, 96, 97, 101, 103, 107, 109, 112, 113, 115, 124, 127, 128, 131, 137, 139, 149, 151, 157, 163, 167, 173...
[ "nonn" ]
A254838
[ 512, 2485, 8776, 30182, 99200, 293012, 794128, 2084773, 5392400, 13573624, 33204574, 80124746, 192349472, 458091034, 1080492808, 2534264261, 5930184322, 13838765283, 32185821994, 74693933546, 173167669926, 401063439075 ]
[ "nonn" ]
A192904
[ 1, 0, 1, 5, 16, 49, 153, 480, 1505, 4717, 14784, 46337, 145233, 455200, 1426721, 4471733, 14015632, 43928817, 137684905, 431542080, 1352570689, 4239325789, 13287204352, 41645725825, 130529073953, 409113752000, 1282274186177 ]
[ "nonn", "easy" ]
A375947
[ 1, 6, 66, 1032, 20856, 516384, 15129600, 511880160, 19637499360, 842285112000, 39939749040960, 2074625404323840, 117151213971202560, 7145371319204667000, 468138620331976360000, 3.2788234887866637e+22, 2.4447731999224305e+24 ]
[ "nonn" ]
A257659
[ 275223438741, 4561072096211306500, 9.306119954843409e+33 ]
[ "nonn", "more" ]
A155648
[ 1, 15, 135, 1215, 11295, 107775, 1046655, 10279935, 101679615, 1010077695, 10060466175, 100362797055, 1002176782335, 10013060694015, 100078364164095, 1000470184984575, 10002821109907456, 100016926659444740 ]
[ "nonn", "easy" ]
A072187
[ 1, 1, 1, 1, 2, 3, 6, 11, 24, 51, 120, 283, 716, 1833, 4948, 13561, 38788, 112745, 339676, 1039929, 3283876, 10532747, 34717276, 116158851, 398257012, 1385117947, 4925094508, 17752742867, 65297807204, 243319812785, 923739847132, 3550638576721, 138857837...
[ "nonn" ]
A112004
[ 90, -8028, 459855, -22166430, 991865875, -43155112000, 1871623083330, -82074799907100, 3670430981817600, -168269191527937500, 7933301574849276000, -385378337023784400000, 1.930913282944021e+22, -9.983824500328765e+23, 5.327750402927869e+25 ]
[ "sign", "easy" ]
A375369
[ 0, 8, 8, 0, 0, 6, 8, 2, 4, 4, 2, 6, 1, 6, 6, 5, 8, 8, 8, 2, 6, 4, 4, 1, 7, 8, 2, 3, 6, 3, 5, 8, 0, 0, 1, 3, 8, 3, 6, 7, 6, 3, 2, 6, 1, 0, 8, 9, 0, 3, 3, 2, 9, 0, 1, 9, 2, 1, 6, 6, 7, 6, 3, 6...
[ "nonn", "cons" ]
A063811
[ 1, 4, 6, 14, 18, 22, 28, 30, 38, 38, 48, 46, 58, 54, 68, 62, 78 ]
[ "dead" ]
A180746
[ 1, 3, 6, 10, 16, 23, 31, 40, 51, 63, 77, 93, 111, 130, 151, 173, 196, 220, 247, 275, 306, 338, 371, 407, 445, 487, 530, 574, 620, 667, 715, 764, 818, 874, 931, 990, 1052, 1115, 1179, 1245, 1312, 1381, 1452, 1524, 1600, 1677, ...
[ "nonn" ]
A082438
[ 2, 727, 929, 30203, 36263, 37273, 39293, 70207, 72227, 73237, 93239, 96269, 1022201, 1062601, 1082801, 1092901, 1212121, 1242421, 1262621, 1362631, 1412141, 1422241, 1452541, 1532351, 1542451, 1572751, 1712171, 1802081 ]
[ "nonn", "base" ]
A382165
[ 1, 9, 45, 999, 2223, 4950, 5050, 5292, 7272, 142857, 148149, 187110, 356643, 466830, 499500, 500500, 538461, 627615, 648648, 681318, 791505, 818181, 961038, 994708, 5555556, 11111112, 16590564, 30884184, 36363636, 49995000, 50005000, 55474452, 74747475...
[ "nonn", "base" ]
A123952
[ 1, 4, 17, 77, 371, 1891, 10123, 56503, 326699, 1945799, 11879987, 74039167, 469266331, 3014973511, 19581735203, 128267231663, 845770626539, 5605309590679, 37293554232307, 248855791875007, 1664285028373691, 11148949376158632, 74779855705724480 ]
[ "nonn", "easy" ]
A352542
[ 89, 187, 1058, 529, 1481, 9892, 4946, 2473, 9905, 19855, 118406, 59203, 154523, 708844, 354422, 177211, 949322, 474661, 1241102, 620551, 1275761, 9040972, 4520486, 2260243, 8692463, 18558895, 117444446, 58722223, 146254445, 801698866, 400849433, 13852927...
[ "nonn", "base" ]
A154558
[ 1, 1, 2, 1, 4, 4, 1, 6, 12, 9, 1, 8, 24, 36, 21, 1, 10, 40, 90, 105, 51, 1, 12, 60, 180, 315, 306, 127, 1, 14, 84, 315, 735, 1071, 889, 323, 1, 16, 112, 504, 1470, 2856, 3556, 2584, 835, 1, 18, 144, 756, 2646, 6426, ...
[ "nonn", "tabl", "easy" ]
A085909
[ 0, 5, 11, 13, 17, 19, 29, 37, 31, 41, 47, 43, 59, 67, 53, 61, 71, 73, 79, 101, 83, 97, 131, 359, 103, 107, 109, 137, 127, 293, 163, 151, 149, 181, 179, 157, 167, 193, 173, 233, 191, 241, 197, 223, 227, 211, 467, 229, 239...
[ "nonn" ]
A175055
[ 1, 3, 2, 7, 4, 6, 15, 8, 5, 12, 14, 31, 16, 9, 11, 24, 13, 28, 30, 63, 32, 17, 19, 10, 23, 48, 25, 27, 56, 29, 60, 62, 127, 64, 33, 35, 18, 39, 20, 22, 47, 96, 49, 51, 26, 55, 112, 57, 59, 120, 61, 124, 126, 25...
[ "base", "nonn" ]
A356682
[ 2, 1, 0, 1, 2, 0, 1, 0, 2, 0, 1, 2, 0, 2, 1, 0, 1, 2, 0, 1, 0, 2, 0, 1, 2, 1, 0, 1, 2, 0, 1, 0, 2, 0, 3, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 3, 0, 1, 0, 3, 0, 2, 0, 1, 0, 2, 0, 3, 0, 1, 0...
[ "nonn" ]
A162738
[ 4, 6, 8, 9, 20, 24, 28, 30, 32, 36, 40, 42, 44, 48, 50, 78, 81, 84, 90, 96, 99, 102, 105, 108, 114, 117, 120, 126, 132, 135, 138, 144, 147, 150, 153, 156, 162, 165, 168, 228, 232, 240, 248, 252, 256, 260, 264, 272, 276, ...
[ "nonn" ]
A156059
[ 185, 247, 253, 295, 329, 355, 405, 425, 453, 471, 533, 539, 565, 583, 595, 671, 675, 689, 703, 755, 781, 785, 815, 841, 855, 925, 989, 1037, 1075, 1099, 1113, 1121, 1159, 1189, 1207, 1219, 1269, 1287, 1305, 1329, 1341, 1403, 1413, ...
[ "nonn", "base" ]
A110171
[ 1, 2, 1, 8, 4, 1, 38, 18, 6, 1, 192, 88, 32, 8, 1, 1002, 450, 170, 50, 10, 1, 5336, 2364, 912, 292, 72, 12, 1, 28814, 12642, 4942, 1666, 462, 98, 14, 1, 157184, 68464, 27008, 9424, 2816, 688, 128, 16, 1, 864146, 374274, 14...
[ "nonn", "tabl" ]
A247312
[ 11252109375, 47450841796875, 187605480615234370, 712096246922607500000, 2.627953955633148e+24, 9.500846300153588e+27, 2.935715952182484e+40, 8.093248440001343e+43, 2.1832636861183653e+47 ]
[ "nonn" ]
A243979
[ 2, 5, 14, 124, 399, 4552, 15898, 203095, 37029521, 105973558438, 19140185454656172, 3.827634977577892e+21 ]
[ "nonn", "hard", "more" ]
A055058
[ 3, 47, 61, 67, 73, 107, 109, 127, 137, 193, 283, 293, 433, 439, 547, 577, 631, 829, 907, 911, 929, 937, 971, 977, 983, 991, 1009, 1021, 1033, 1039, 1063, 1103, 1117, 1129, 1171, 1181, 1237, 1249, 1289, 1297, 1321, 1327, 1381, 1451...
[ "nonn", "base" ]
A311323
[ 1, 4, 8, 12, 16, 21, 27, 32, 35, 37, 40, 44, 49, 54, 58, 62, 65, 69, 75, 81, 86, 90, 94, 97, 100, 103, 106, 110, 114, 119, 125, 131, 135, 138, 142, 146, 151, 156, 160, 163, 165, 168, 173, 179, 184, 188, 192, 196, 200, ...
[ "nonn" ]
A293182
[ 1, 2, 1, 6, 3, 6, 16, 12, 16, 22, 51, 36, 60, 62, 91, 154, 148, 176, 236, 278, 328, 552, 508, 670, 771, 988, 1068, 1438, 1844, 1998, 2401, 2882, 3300, 4030, 4640, 5406, 7212, 7584, 9072, 10480, 12612, 13964, 17024, 18860, 22545,...
[ "nonn" ]
A354198
[ 1, 3, 1, 3, 3, 3, 2, 26, 23, 3, 3, 3, 1, 3, 21, 6, 3, 9, 14, 22, 2, 2, 7, 182, 3, 14, 313, 201, 3, 3, 3, 603, 3, 3, 3, 115, 3, 3, 2, 3, 3, 21, 2, 9, 9, 3, 2, 75, 2, 22, 3, 109, 3, 21, 46, 109, 2, 23, ...
[ "nonn" ]
A221456
[ 0, 1, 2, 7, 25, 102, 455, 2192, 11203, 59814, 329343, 1851911, 10560334, 60776590, 351887190, 2045329031, 11918417465, 69563676328, 406447507101, 2376416054328, 13900548090293, 81332697848104, 475968841105687, 2785759950405621 ]
[ "nonn" ]
A026024
[ 1, 26, 443, 6280, 80481, 969126, 11196103, 125634740, 1380061661, 14917299826, 159239422563, 1683073423200, 17647253908441, 183823250672126, 1904399083525823, 19639540889107660, 201755613688828830 ]
[ "nonn", "easy" ]
A204116
[ 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 15, 1, 3, 1, 1, 1, 7, 1, 1, 7, 1, 1, 1, 3, 1, 3, 31, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 7, 15, 1, 63, 1, 15...
[ "nonn", "tabl" ]
A043373
[ 1, 6, 8, 9, 10, 11, 13, 19, 25, 31, 36, 38, 39, 40, 41, 48, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 62, 63, 64, 65, 66, 68, 69, 70, 71, 73, 78, 80, 81, 82, 83, 85, 91, 97, 103, 109, 114, 116, 117, 118, 119, 121, ...
[ "nonn", "base" ]
A025888
[ 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 2, 0, 0, 1, 0, 2, 1, 0, 2, 0, 3, 1, 0, 2, 1, 3, 2, 0, 3, 1, 4, 2, 1, 3, 2, 4, 3, 1, 4, 2, 6, 3, 2, 4, 3, 6, 4, 2, 6, 3, 8, 4, 3, 6, 4, 8, 6, 3, 8, 4, 10, 6, 4, ...
[ "nonn", "easy" ]
A211952
[ 5, 9, 33, 117, 391, 1350, 4546, 15753, 55053, 196185 ]
[ "nonn", "hard" ]
A383029
[ 0, 1, 0, 0, 1, 0, 3, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 3, 1, 0, 0, 1, 0, 5, 0, 1, 0, 0, 1, 0, 3, 0, 1, 0, 1, 0, 0, 0, 1, 0, 3, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 3, 0...
[ "nonn", "easy" ]
A045876
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 11, 33, 44, 55, 66, 77, 88, 99, 110, 22, 33, 22, 55, 66, 77, 88, 99, 110, 121, 33, 44, 55, 33, 77, 88, 99, 110, 121, 132, 44, 55, 66, 77, 44, 99, 110, 121, 132, 143, 55, 66, 77, 88,...
[ "easy", "nonn", "base", "look" ]
A290581
[ 1, 20, 364, 7028, 148752, 3471192, 89097664, 2503362488, 76575071488, 2536513162508, 90532686154752, 3465845396598540, 141726054915248130, 6167370619705004000, 284635248765764900000, 1.3889365886508877e+22, 7.146123667289393e+23, 3.8667882915659893e+25, 2.1954062086572842e+27, ...
[ "nonn" ]
A299126
[ 13, 112, 184, 3368, 13809, 198753, 2286535, 21688754, 284403950, 3307001257, 37294174386, 457492833765, 5410790816292, 63288087145558, 760502020473486, 9023717299845918, 106698982952917570, 1272922168774272300 ]
[ "nonn" ]
A088455
[ 1, 0, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 4, 3, 1, 0, 1, 8, 8, 4, 1, 0, 1, 16, 20, 13, 5, 1, 0, 1, 32, 49, 38, 19, 6, 1, 0, 1, 64, 119, 106, 63, 26, 7, 1, 0, 1, 128, 288, 288, 195, 96, 34, 8, 1, 0, 1, 256, ...
[ "nonn", "tabl" ]
A041650
[ 18, 19, 37, 167, 204, 779, 983, 4711, 5694, 10405, 380274, 390679, 770953, 3474491, 4245444, 16210823, 20456267, 98035891, 118492158, 216528049, 7913501922, 8130029971, 16043531893, 72304157543, 88347689436, 337347225851, 425694915287, 2040126886999 ]
[ "nonn", "cofr", "frac", "easy" ]
A233170
[ 10, 800, 78336, 7938048, 808583168, 82428559360, 8403942375424, 856833627521024, 87359712110051330, 8906889846866313000, 908115313250288000000, 9.25882598104724e+22, 9.439975016878715e+24 ]
[ "nonn" ]
A205422
[ 256, 2768, 2768, 31216, 62716, 31216, 345008, 1448498, 1448498, 345008, 3855292, 33701202, 74565586, 33701202, 3855292, 42869296, 782598960, 3739413082, 3739413082, 782598960, 42869296, 477932092, 18167227774, 189526149374 ]
[ "nonn", "tabl" ]
A158359
[ 1, 1, -1, 1, -3, 1, 1, -6, 7, -2, 1, -10, 25, -23, 6, 1, -15, 65, -123, 98, -24, 1, -21, 140, -448, 713, -514, 120, 1, -28, 266, -1288, 3401, -4792, 3204, -720, 1, -36, 462, -3150, 12417, -28599, 36748, -23148, 5040, 1, -45,...
[ "sign", "tabl", "easy" ]
A295802
[ 45, 54, 57, 60 ]
[ "nonn", "more" ]
A116695
[ 9, 8, 9, 7, 8, 7, 9, 8, 9, 6, 8, 6, 9, 7, 9, 6, 7, 6, 8, 7, 8, 6, 7, 6, 9, 8, 9, 7, 8, 7, 9, 8, 9, 5, 8, 5, 9, 7, 9, 5, 7, 5, 8, 7, 8, 5, 7, 5, 9, 8, 9, 6, 8, 6, 9, 8, 9, 5, 8, 5, 9, 6, 9, 5...
[ "base", "nonn" ]
A223492
[ 28, 106, 466, 1970, 7904, 31897, 130224, 508551, 2071740, 8361761, 33294270, 132488646, 535901943, 2137571624, 8555879403, 34280993597, 137026129884, 548302259588, 2197308278858, 8759433440572, 35118744813397, 140658793309825 ]
[ "nonn" ]
A320919
[ 1, 2, 9, 10, 18, 20, 28, 29, 36, 37, 38, 45, 46, 54, 56, 64, 65, 72, 73, 74, 81, 82, 90, 92, 100, 101, 108, 109, 110, 117, 118, 126, 128, 136, 137, 144, 145, 146, 153, 154, 162, 164, 172, 173, 180, 181, 182, 189, 190, ...
[ "nonn", "easy" ]
A002431
[ 1, -1, -1, -2, -1, -2, -1382, -4, -3617, -87734, -349222, -310732, -472728182, -2631724, -13571120588, -13785346041608, -7709321041217, -303257395102, -52630543106106960000, -616840823966644, -522165436992898300000, -6.080390575672284e+21, -1.0121188937927645e+22 ]
[ "sign", "frac", "easy", "nice" ]
A064279
[ 0, 1, 1, 4, 1, 12, 1, 16, 9, 28, 1, 48, 1, 52, 33, 64, 1, 108, 1, 112, 57, 124, 1, 192, 25, 172, 81, 208, 1, 324, 1, 256, 129, 292, 73, 432, 1, 364, 177, 448, 1, 612, 1, 496, 297, 532, 1, 768, 49, 700, 297, 688, ...
[ "nonn" ]
A004681
[ 2, 3, 5, 10, 14, 16, 23, 25, 32, 41, 43, 52, 56, 61, 65, 104, 113, 115, 124, 131, 133, 142, 146, 155, 166, 203, 205, 212, 214, 221, 241, 245, 254, 256, 302, 304, 313, 322, 326, 335, 344, 346, 362, 364, 401, 403, 421, 436, ...
[ "nonn", "easy", "base" ]
A279727
[ 0, 0, 3, 3, 8, 5, 7, 0, 12, 0, 11, 23, 13, 0, 31, 0, 17, 30, 19, 0, 19, 0, 23, 0, 0, 23, 0, 0, 29, 101, 31, 0, 0, 31, 0, 0, 37, 0, 37, 0, 41, 109, 43, 0, 43, 0, 47, 0, 0, 47, 0, 0, 100, 0, 0, 53, 0, 0, ...
[ "nonn", "easy" ]
A204618
[ 0, 1, 8, 45, 240, 1300, 7308, 42973, 264960, 1712907, 11597500, 82106970, 606757968, 4671909853, 37416267112, 311165672625, 2682916389632, 23947947373356, 220992885195516, 2105619936025577, 20689663294148800, 209417588925127200, 2181250417408504300 ]
[ "nonn" ]
A056072
[ 1, 2, 15, 3814279 ]
[ "nonn" ]
A072090
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[ "nonn" ]
A012702
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[ "sign" ]
A248219
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[ "nonn" ]
A308638
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[ "nonn", "look" ]
A065129
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[ "nonn" ]
A144066
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[ "nonn", "tabl" ]
A136806
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[ "fini", "full", "easy", "nonn" ]
A136964
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[ "base", "nonn" ]
A017171
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[ "nonn", "easy" ]
A015710
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[ "sign" ]
A319537
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[ "nonn", "word" ]
A074203
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[ "base", "easy", "nonn" ]
A156431
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[ "nonn" ]
A337278
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[ "nonn", "tabl" ]
A118224
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[ "nonn" ]
A387694
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[ "nonn", "easy" ]
A128526
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[ "nonn" ]
A163123
[ 0, 0, 2, 0, 4, 2, 7, 3, 10, 4, 8, 9, 15, 7, 19, 14, 11, 9, 9 ]
[ "nonn", "more" ]
A343385
[ 1, 10, 29, 2, 5, 40, 7, 4, 11, 26, 83, 174, 123, 84, 27, 12, 15, 18, 35, 64, 97, 36, 65, 142, 63, 66, 149, 102, 143, 146, 103, 100, 141, 62, 33, 58, 55, 28, 87, 178, 131, 92, 31, 54, 13, 60, 139, 248, 191, 316, 247, ...
[ "nonn", "fini" ]
A233044
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[ "nonn" ]
A192172
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[ "nonn" ]
A167618
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[ "nonn" ]
A310084
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[ "nonn" ]
A353735
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[ "nonn", "base" ]
A257670
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[ "nonn" ]
A299689
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[ "nonn", "tabl" ]
A152986
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[ "easy", "nonn", "look" ]
A339995
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[ "nonn" ]
A167081
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[ "nonn" ]
A286119
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[ "nonn", "easy" ]
A278624
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[ "nonn" ]
A373893
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[ "nonn" ]