id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A036129
[ 1, 2, 4, 8, 16, 32, 5, 10, 20, 40, 21, 42, 25, 50, 41, 23, 46, 33, 7, 14, 28, 56, 53, 47, 35, 11, 22, 44, 29, 58, 57, 55, 51, 43, 27, 54, 49, 39, 19, 38, 17, 34, 9, 18, 36, 13, 26, 52, 45, 31, 3, 6, 12, 24, 48, 37, 15 ]
[ "nonn", "easy" ]
A166504
[ 2, 3, 5, 7, 11, 13, 17, 19, 22, 23, 25, 27, 29, 31, 32, 33, 35, 37, 41, 43, 47, 52, 53, 55, 57, 59, 61, 67, 71, 72, 73, 75, 77, 79, 83, 89, 97, 101, 103, 107, 109, 112, 113, 115, 117, 127, 131, 132, 133, 135, 137, 139, 149, 151, 157, 163, 167, 172, 173, 175, 177, 179 ]
[ "nonn", "base" ]
A371247
[ 1, 2, 3, 4, 6, 5, 7, 9, 10, 8, 11, 14, 13, 15, 12, 16, 21, 20, 18, 22, 17, 19, 25, 27, 26, 24, 28, 23, 29, 35, 32, 36, 37, 30, 33, 41, 34, 44, 42, 31, 39, 45, 43, 46, 38, 40, 52, 49, 53, 54, 47, 50, 48, 55, 56, 51, 66, 61, 63, 58, 59, 60, 67, 57, 78, 62, 64 ]
[ "nonn" ]
A321809
[ 1, -4097, 531442, -16773121, 244140626, -2177317874, 13841287202, -68702695425, 282430067923, -1000244144722, 3138428376722, -8913940970482, 23298085122482, -56707753666594, 129746582562692, -281406240452609, 582622237229762 ]
[ "sign", "mult" ]
A341004
[ 3, 14, 25, 30, 36, 41, 47, 52, 58, 63, 69, 74, 85, 96, 104, 111, 122, 140, 205, 212, 221, 227, 234, 243, 249, 250, 256, 265, 272, 278, 287, 294, 300, 306, 324, 342, 360, 401, 407, 410, 423, 429, 432, 445, 454, 467, 470, 476, 489, 492, 498, 502, 508, 520, 526, 544, 562, 580 ]
[ "base", "nonn" ]
A334468
[ 4, 6, 8, 12, 15, 16, 18, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 63, 64, 70, 72, 75, 80, 81, 90, 96, 100, 105, 108, 120, 125, 128, 135, 140, 144, 150, 160, 162, 168, 175, 180, 189, 192, 200, 210, 216, 224, 225, 234, 240, 243, 250, 256, 270, 280, 288, 294, 300 ]
[ "nonn" ]
A027694
[ 9, 11, 15, 21, 29, 39, 51, 65, 81, 99, 119, 141, 165, 191, 219, 249, 281, 315, 351, 389, 429, 471, 515, 561, 609, 659, 711, 765, 821, 879, 939, 1001, 1065, 1131, 1199, 1269, 1341, 1415, 1491, 1569, 1649, 1731, 1815, 1901, 1989, 2079, 2171, 2265, 2361, 2459, 2559 ]
[ "nonn", "easy" ]
A080202
[ 0, 0, 1, 0, 0, 1, 0, 0, 3, 25, 0, 0, 0, 2, 7, 0, 0, 0, 0, 68, 623, 0, 0, 0, 0, 0, 124, 1183, 0, 0, 0, 0, 0, 0, 2338, 24603, 0, 0, 0, 0, 0, 0, 3, 598, 5895, 0, 0, 0, 0, 0, 0, 0, 0, 161947, 2017603 ]
[ "nonn", "tabl", "base", "more" ]
A339094
[ 1, 1, 2, 2, 3, 4, 5, 6, 7, 8, 11, 12, 15, 16, 19, 22, 25, 28, 31, 34, 41, 44, 51, 54, 61, 68, 75, 82, 89, 96, 109, 116, 129, 136, 149, 162, 175, 188, 201, 214, 236, 249, 271, 284, 306, 328, 350, 372, 394, 416, 451, 473, 508, 530, 565, 600, 635, 670, 705, 740, 793, 828, 881, 916 ]
[ "easy", "nonn" ]
A375879
[ 1, 3, 18, 159, 1860, 27180, 477702, 9830814, 232182024, 6195709008, 184478436720, 6066613989216, 218468134274904, 8553367426018896, 361834389120925250, 16450660929420052000, 800070438821317400000, 4.145308467440035e+22 ]
[ "nonn" ]
A134977
[ 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2, 1, 4, 2, 3, 0, 2 ]
[ "nonn", "easy" ]
A329400
[ 0, 1, 1, 2, 2, 1, 2, 3, 3, 2, 3, 1, 2, 1, 3, 4, 4, 3, 4, 2, 3, 2, 4, 1, 2, 2, 3, 1, 2, 1, 4, 5, 5, 4, 5, 3, 4, 3, 5, 2, 3, 3, 4, 2, 3, 2, 5, 1, 2, 2, 3, 1, 3, 2, 4, 1, 2, 1, 3, 1, 2, 1, 5, 6, 6, 5, 6, 4, 5, 4, 6, 3, 4, 4, 5, 3, 4, 3, 6, 2, 3, 3, 4, 2, 4, 3, 5 ]
[ "nonn" ]
A054346
[ 1, 1, 2, 2, 4, 3, 5, 3, 7, 5, 7, 4, 11, 5, 8, 8, 12, 6, 13, 6, 15, 10, 11, 7, 21, 9, 13, 12, 18, 9, 21, 9, 21, 14, 16, 13, 29, 11, 17, 16, 28, 12, 28, 12, 25, 21, 20, 13, 39, 16, 24, 20, 29, 15, 34, 18, 36, 22, 25, 16, 47, 17, 26, 29, 38, 21, 40, 18, 36, 26, 36, 19, 58, 20 ]
[ "nonn", "easy", "nice" ]
A083714
[ 0, 0, 0, 1, 0, 2, 0, 5, 4, 2, 0, 8, 0, 6, 8, 11, 0, 14, 0, 14, 12, 8, 0, 20, 18, 10, 20, 16, 0, 24, 0, 29, 20, 14, 24, 28, 0, 18, 24, 32, 0, 34, 0, 32, 38, 20, 0, 44, 40, 42, 30, 34, 0, 50, 42, 46, 34, 24, 0, 54, 0, 30, 54, 59, 48, 50, 0, 50, 44, 60, 0, 68, 0, 36, 68, 54, 62, 60, 0, 74 ]
[ "nonn" ]
A043155
[ 32, 68, 96, 132, 160, 196, 224, 256, 288, 324, 352, 388, 416, 452, 480, 516, 544, 580, 608, 644, 672, 708, 736, 768, 800, 836, 864, 900, 928, 964, 992, 1028, 1056, 1092, 1120, 1156, 1184, 1220, 1248, 1280, 1312, 1348, 1376 ]
[ "nonn", "base" ]
A038795
[ 1, 6, 17, 33, 55, 89, 144, 232, 370, 581, 895, 1350, 1993, 2881, 4082, 5676, 7756, 10429, 13817, 18058, 23307, 29737, 37540, 46928, 58134, 71413, 87043, 105326, 126589, 151185, 179494, 211924, 248912, 290925, 338461 ]
[ "nonn" ]
A137084
[ 3, 5, 23, 27, 73, 77, 235, 523, 527, 577, 723, 773, 5223, 5723, 5773, 5777, 7227, 27527, 57927, 72335, 75723, 97773, 232227, 232335, 239227, 239573, 522235, 597773, 727527, 757227, 2322235, 2357527, 5232335, 5723227, 5775777, 7597523, 23522235, 23922235, 23923335, 27797977, 57755723, 59377923, 59799277, 72755723, 229255223, 235357977 ]
[ "base", "nonn" ]
A047784
[ 1, 2, 3, 4, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23 ]
[ "nonn" ]
A007704
[ 2, 3, 4, 9, 28, 225, 6076, 1361025, 8268226876, 11253255215681024, 9.304446720552777e+25, 1.0470531358708674e+42 ]
[ "nonn", "easy" ]
A367179
[ 1, 1, 1, -7, -74, 14, 10736, 124032, -1695672, -81281688, -528840024, 47385631512, 1540148366736, -12438137705904, -2292918626509536, -48210827445848830, 2456594159904115000, 177787615056364270000, 782103240212585500000 ]
[ "sign" ]
A128944
[ 1, 2, 3, 4, 9, 10, 16, 23, 229, 245, 266, 338, 628, 4118 ]
[ "hard", "more", "nonn" ]
A346613
[ 1, 3, 4, 5, 6, 12, 8, 9, 7, 18, 12, 20, 14, 24, 24, 13, 18, 21, 20, 30, 32, 36, 24, 36, 11, 42, 16, 40, 30, 72, 32, 21, 48, 54, 48, 35, 38, 60, 56, 54, 42, 96, 44, 60, 42, 72, 48, 52, 15, 33, 72, 70, 54, 48, 72, 72, 80, 90, 60, 120, 62, 96, 56, 29, 84, 144, 68, 90, 96, 144, 72, 63 ]
[ "nonn", "mult", "easy" ]
A250031
[ 0, 1, 1, 13, 8, 26, 19, 163, 361, 1223, 1307, 16477, 5749, 83977, 88267, 280817, 147916, 1377406, 2839897, 58552633, 60492571, 63263911, 65468386, 403117367, 549883871, 579629587, 596790577, 1864736021, 1912541636, 29293503812, 59449633388, 969992016739 ]
[ "nonn", "frac" ]
A305381
[ 4, 6, 24, 36, 112, 184, 440, 848, 1792, 3680, 7392, 15264, 30464, 62272, 124800, 252416, 507264, 1019904, 2050048, 4111872, 8255488, 16544256, 33173504, 66454528, 133126144, 266594304, 533755904, 1068535808, 2138636288, 4280188928, 8564875264, 17137852416 ]
[ "nonn", "easy" ]
A315435
[ 1, 6, 11, 15, 23, 28, 34, 39, 45, 53, 55, 62, 68, 73, 79, 82, 91, 96, 100, 107, 113, 120, 123, 129, 136, 141, 145, 150, 159, 163, 168, 174, 181, 188, 189, 197, 204, 208, 213, 217, 227, 231, 234, 242, 249, 255, 257, 264, 272, 276 ]
[ "nonn" ]
A338361
[ 2, 4, 6, 8, 12, 15, 19, 22, 26, 32, 35, 41, 45, 48, 52, 59, 65, 68, 74, 79, 82, 88, 92, 98, 106, 111, 114, 118, 121, 126, 139, 144, 150, 153, 162, 165, 172, 178, 182, 189, 195, 198, 209, 212, 216, 219, 230, 241, 245, 248, 253, 260, 263, 274, 280, 286, 293, 296, 302, 306, 309, 320, 333 ]
[ "nonn" ]
A009592
[ 1, 3, 17, 315, 9505, 413523, 26287601, 2238416523, 246589091137, 34186190864163, 5819027995038161, 1193323792251385000, 290182644485513600000, 8.255975898856485e+22 ]
[ "nonn" ]
A181522
[ 0, 0, 2, 6, 13, 25, 47, 92, 184, 367, 721, 1416, 2769, 5407, 10662, 21135, 41866, 83220, 166617, 334852, 670725, 1334868, 2650263, 5280475, 10567613, 21145411, 42103939, 83382359, 164843079, 326791838, 650995628, 1301718424, 2605360702, 5205671338, 10369588530 ]
[ "nonn" ]
A283649
[ 1, 0, 111, 1011, 111, 101111, 11111, 10111111, 1111111, 1011111111, 111111111, 101111111111, 11111111111, 10111111111111, 1111111111111, 1011111111111111, 111111111111111, 101111111111111100, 11111111111111112, 10111111111111110000, 1111111111111111200 ]
[ "nonn", "easy" ]
A026713
[ 1, 1, 2, 4, 7, 12, 22, 39, 66, 118, 208, 350, 619, 1085, 1820, 3198, 5582, 9344, 16347, 28443, 47542, 82910, 143909, 240276, 418024, 724191, 1208106, 2097918, 3628929, 6049752, 10490112, 18123181, 30196610, 52297856 ]
[ "nonn" ]
A210203
[ 1, 3, 7, 2, 15, 10, 2, 31, 34, 14, 2, 63, 98, 62, 18, 2, 127, 258, 222, 98, 22, 2, 255, 642, 702, 418, 142, 26, 2, 511, 1538, 2046, 1538, 702, 194, 30, 2, 1023, 3586, 5630, 5122, 2942, 1090, 254, 34, 2, 2047, 8194, 14846, 15874, 11006, 5122, 1598, 322 ]
[ "nonn", "tabf" ]
A132253
[ 89, 359, 389, 449, 479, 509, 719, 839, 929, 1109, 1259, 1409, 1439, 1499, 1559, 1709, 1889, 1979, 2039, 2069, 2099, 2399, 2459, 2579, 2609, 2699, 2819, 2879, 2909, 2939, 3089, 3209, 3449, 3659, 3719, 3779, 3989, 4079, 4139, 4289, 4349 ]
[ "easy", "nonn" ]
A088914
[ 1, 32, 605, 10933, 196384, 3524489, 63245753, 1134902560, 20365009477, 365435291981, 6557470308896, 117669030432337, 2111485077903025, 37889062372947490, 679891637638098000, 12200160415120531000 ]
[ "easy", "nonn" ]
A024341
[ 2, 112, 10112, -17297408, -15034114048, 164133555208192 ]
[ "dead" ]
A370772
[ 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 3, 1, 1, 0, 1, 6, 3, 1, 1, 0, 1, 16, 10, 3, 1, 1, 0, 1, 37, 39, 10, 3, 1, 1, 0, 1, 96, 164, 48, 10, 3, 1, 1, 0, 1, 239, 746, 253, 48, 10, 3, 1, 1, 0, 1, 622, 3474, 1584, 273, 48, 10, 3, 1, 1, 0, 1, 1607, 16658, 10500, 1913, 273, 48, 10, 3, 1, 1, 0 ]
[ "nonn", "tabl" ]
A110471
[ 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0 ]
[ "base", "easy", "nonn" ]
A012378
[ 0, 2, 12, 430, 26040, 2661178, 402231940, 84456360742, 23476965450736, 8341678414816242, 3686586514781799400, 1.9829799487140269e+21, 1.275341677617694e+24, 9.663418003524007e+26 ]
[ "nonn" ]
A196887
[ 1, 1, 210, 3428059, 87935111811, 1541533772278182, 16177644099354374000, 1.0153903326980182e+23, 3.6561822309598176e+26, 8.842676925322643e+29, 1.3570423812093892e+33, 1.470981941328093e+36 ]
[ "nonn" ]
A060140
[ 0, 1, 3, 9, 10, 27, 28, 30, 81, 82, 84, 90, 91, 243, 244, 246, 252, 253, 270, 271, 273, 729, 730, 732, 738, 739, 756, 757, 759, 810, 811, 813, 819, 820, 2187, 2188, 2190, 2196, 2197, 2214, 2215, 2217, 2268, 2269, 2271, 2277, 2278, 2430, 2431, 2433, 2439 ]
[ "nonn" ]
A076940
[ 1010, 10100, 101000, 1001000, 10100000, 100100000, 1000100000, 1010000000, 10010000000, 100010000000, 10000010000000, 10100000000, 1010000, 1000100000000, 100000100000000, 10000000100000000 ]
[ "nonn" ]
A005603
[ 11, 7, 2, 2131, 1531, 385591, 16651, 15514861, 857095381, 205528443121, 1389122693971, 216857744866621, 758083947856951, 107588900851484910, 69257563144280940, 3203000719597030000 ]
[ "nonn", "more" ]
A305810
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 5, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 5, 22, 23, 24, 25, 26, 5, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 5, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 5, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 5, 78, 79, 80, 81, 82, 5, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 5 ]
[ "nonn" ]
A035944
[ 0, 1, 1, 2, 2, 4, 4, 7, 8, 11, 13, 19, 22, 30, 36, 47, 56, 73, 86, 110, 131, 163, 194, 241, 284, 348, 412, 499, 588, 709, 832, 996, 1168, 1387, 1622, 1919, 2235, 2631, 3060, 3584, 4156, 4852, 5610, 6525, 7530, 8724, 10044, 11607, 13328, 15355, 17600 ]
[ "nonn", "easy" ]
A134656
[ 2, 10453, 129341, 157519, 555097, 595411, 624363411431 ]
[ "hard", "more", "nonn" ]
A012066
[ 1, 0, 12, 248, 21648, 2241088, 390536000, 91111189120, 28811937609984, 11657540060256256, 5912796798580973000, 3.6656102140924673e+21, 2.729315998404117e+24, 2.402622277659458e+27 ]
[ "nonn" ]
A196763
[ 7, 0, 6, 8, 8, 9, 1, 4, 0, 3, 3, 9, 5, 0, 6, 6, 8, 0, 0, 6, 8, 7, 5, 9, 9, 5, 6, 1, 9, 1, 6, 7, 6, 2, 0, 4, 2, 7, 1, 5, 0, 4, 5, 1, 0, 1, 7, 0, 0, 5, 9, 5, 1, 7, 8, 7, 8, 0, 8, 5, 5, 2, 2, 9, 2, 2, 7, 5, 8, 0, 2, 5, 6, 0, 3, 5, 9, 4, 4, 1, 4, 9, 2, 2, 0, 8, 7, 2, 9, 7, 6, 5, 7, 9, 7, 9, 2, 8, 1, 6 ]
[ "nonn", "cons" ]
A141449
[ 1, 1, 2, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8, 2, 5, 8 ]
[ "nonn" ]
A372466
[ 0, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 3 ]
[ "nonn", "easy" ]
A256956
[ 0, 2, 4, 6, 9, 12, 16, 16, 16, 20, 25, 30, 36, 36, 36, 42, 49, 56, 64, 64, 64, 72, 81, 81, 81, 81, 81, 90, 100, 110, 121, 121, 121, 121, 121, 132, 144, 144, 144, 156, 169, 182, 196, 196, 196, 210, 225, 225, 225, 225, 225, 240, 256, 256, 256, 256, 256, 272 ]
[ "nonn", "easy" ]
A296989
[ 1, 77, 1653, 12601, 639327, 26724927, 702794334, 24416753991, 892243428330, 29462787050221, 998361846643570, 34570695463676884, 1178226645017158400, 40142564452672586000, 1.374478845809683e+21, 4.697822605741913e+22 ]
[ "nonn" ]
A279874
[ 1, 10, 101, 1110, 1, 111010, 10101, 10111110, 100000001, 1111111010, 10101, 111110111110, 1, 11111111111010, 10101, 1111111110111110, 1, 111111111111111000, 10101, 11111111111110111000, 1, 1.1111111111111111e+21, 10101, 1.1111111111111111e+23, 1 ]
[ "nonn", "easy" ]
A032500
[ 6, 14, 18, 26, 34, 42, 56, 74, 78, 94, 132, 146, 186, 284, 302, 1758, 1816, 2336, 3374, 3466, 4522, 8058, 11114, 12456, 22172, 26208, 39794, 61512, 81576, 238734, 270794, 348972, 420034, 680694, 682974, 964444, 1076024, 1124806, 1158186, 1786968, 2082202 ]
[ "nonn", "hard" ]
A364931
[ 6, 5, 9, 0, 4, 6, 0, 6, 8, 4, 0, 7, 4, 0, 6, 6, 6, 0, 9, 8, 4, 3, 8, 6, 4, 9, 5, 9, 2, 8, 8, 6, 7, 5, 5, 1, 6, 9, 8, 0, 9, 0, 3, 3, 0, 3, 5, 7, 1, 1, 5, 1, 8, 8, 4, 8, 9, 2, 9, 4, 6, 3, 0, 8, 0, 4, 2, 2, 4, 1, 1, 3, 0, 4, 2, 4, 2, 9, 7, 5, 7, 5, 7, 9, 0, 3, 4, 7, 3, 5, 6, 4, 8, 2, 8, 2, 0, 1, 0, 5 ]
[ "nonn", "cons" ]
A325716
[ 0, 0, 1, 2, 4, 5, 9, 13, 18, 25, 36, 48, 65, 86, 115, 151, 197, 253, 328, 421, 535, 677, 857, 1076, 1348, 1680, 2088, 2586, 3192, 3926, 4819, 5896, 7190, 8748, 10622, 12860, 15534, 18723, 22517, 27028, 32372, 38696, 46173, 54997, 65381, 77600, 91949, 108776 ]
[ "nonn", "easy" ]
A222588
[ 65, 511, 1025, 2047, 4097, 16385, 32767, 262145, 1048577, 2097151, 4194305, 8388607, 16777217, 33554431, 67108865, 134217727, 268435457, 536870911, 1073741825, 4294967297, 8589934591, 17179869185, 34359738367, 68719476737, 137438953471, 274877906945 ]
[ "nonn", "easy" ]
A343714
[ 353, 373, 727, 757, 11311, 13331, 19391, 31013, 31513, 33533, 37273, 37573, 39293, 71317, 71917, 73237, 77977, 79397, 97379, 97579, 1035301, 1092901, 1093901, 1175711, 1178711, 1273721, 1317131, 1335331, 1338331, 1513151, 1572751, 1633361, 1737371, 1793971 ]
[ "nonn", "base" ]
A244066
[ 30, 42, 60, 105, 144, 165, 192, 228, 270, 312, 462, 570, 600, 858, 870, 882, 1026, 1092, 1230, 1254, 1290, 1302, 1428, 1482, 1620, 1878, 1998, 2028, 2340, 2550, 2688, 2730, 2760, 3345, 3540, 3582, 3627, 3795, 3885, 4020, 4338, 4500, 4518, 4650, 4755, 4788, 4866 ]
[ "nonn" ]
A011097
[ 1, 6, 4, 3, 7, 5, 1, 8, 2, 9, 5, 1, 7, 2, 2, 5, 7, 6, 2, 3, 0, 8, 4, 9, 7, 9, 3, 6, 2, 3, 0, 9, 7, 9, 5, 1, 7, 3, 8, 3, 4, 9, 2, 5, 8, 9, 9, 4, 5, 4, 7, 5, 2, 0, 0, 4, 1, 1, 0, 2, 9, 7, 6, 7, 5, 3, 2, 1, 0, 7, 6, 9, 2, 4, 9, 2, 0, 9, 9, 7, 9, 2, 9, 9, 7, 6, 2, 0, 1, 9, 8, 4, 1, 8, 9, 4, 7, 7, 4 ]
[ "nonn", "cons", "easy" ]
A324080
[ 1, 1, 3, 3, 2, 2, 3, 2, 4, 4, 4, 4, 2, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 6, 5, 7, 7, 7, 7, 7, 7, 7, 3, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 9, 8, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 11, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 5 ]
[ "nonn" ]
A062204
[ 1, 1, 48639, 75494983297, 1177359342144641500, 1.0374611530805035e+26, 3.6585008462723986e+34, 4.1020870889694863e+43, 1.2406983591182471e+53 ]
[ "nonn" ]
A321204
[ 1, 1, 0, -2, -2, 4, 11, -3, -46, -38, 152, 334, -301, -1855, -719, 7869, 12450, -23422, -87520, 12924, 447028, 458664, -1699630, -4308816, 3528771, 26104199, 12852166, -118868366, -207528889, 368534179, 1517678456, -109794866, -8068372174, -9080718086, 31552958156, 85735418464, -63813069724, -530936155928, -300127192606 ]
[ "sign", "easy" ]
A075160
[ 1, 2, 3, 4, 6, 5, 11, 8, 7, 12, 22, 9, 43, 21, 10, 16, 86, 13, 171, 24, 23, 44, 342, 17, 14, 85, 15, 41, 683, 20, 1366, 32, 42, 172, 19, 25, 2731, 341, 87, 48, 5462, 45, 10923, 88, 18, 684, 21846, 33, 27, 28, 170, 169, 43691, 29, 46, 81, 343, 1365, 87382, 40, 174763 ]
[ "nonn" ]
A272369
[ 92, 184, 1564, 1748, 2116, 3496, 4232, 4324, 5428, 5612, 6532, 8648, 9476, 9844, 10028, 10856, 11224, 12604, 14444, 15364, 16652, 18124, 18952, 19412, 20056, 20884, 21068, 23644, 24932, 26036, 26588, 28612, 28796, 28888, 29164, 30728, 31004, 31924, 32108, 32476, 33304, 34868, 35236, 35788, 36248, 36524 ]
[ "nonn", "easy" ]
A265372
[ 0, 0, 1, 236, 363850, 860077644, 3040856393843, 15614173687644042 ]
[ "nonn" ]
A032131
[ 1, 1, 1, 2, 3, 7, 13, 31, 66, 160, 369, 907, 2191, 5461, 13558, 34209, 86426, 220359, 563475, 1449282, 3739365, 9688104, 25173917, 65621067, 171498288, 449361649, 1180078602, 3105740797, 8189749105, 21636207962, 57257857968, 151771200002, 402899862910, 1071076810324, 2851165864937 ]
[ "nonn" ]
A102688
[ 2, 5, 10, 20, 36, 74, 134, 272, 526, 1052, 2058, 4160, 8204, 16466, 32824, 65696, 131088, 262490, 524306, 1049168, 2097316, 4195358, 8388630, 16779632, 33554516, 67112996, 134218282, 268443848, 536870940, 1073759432, 2147483678 ]
[ "easy", "nonn" ]
A186096
[ 102251, 1252889, 1252889, 11258613, 22559052, 11258613, 83378583, 280102672, 280102672, 83378583, 531218757, 2743553694, 4527262140, 2743553694, 531218757, 2985984444, 22408644868, 55707179395, 55707179395, 22408644868, 2985984444 ]
[ "nonn", "tabl" ]
A156427
[ 1, 168992, 5552479800, 12483723152016, 12976446818207108, 1865501254974930000 ]
[ "nonn" ]
A087062
[ 1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 3, 2, 1, 1, 2, 3, 3, 2, 1, 1, 2, 3, 4, 3, 2, 1, 1, 2, 3, 4, 4, 3, 2, 1, 1, 2, 3, 4, 5, 4, 3, 2, 1, 10, 2, 3, 4, 5, 5, 4, 3, 2, 10, 11, 10, 3, 4, 5, 6, 5, 4, 3, 10, 11, 11, 11, 10, 4, 5, 6, 6, 5, 4, 10, 11, 11, 11, 12, 11, 10, 5, 6, 7, 6, 5, 10, 11, 12, 11, 11, 12, 12 ]
[ "nonn", "tabl", "nice", "base", "look" ]
A011878
[ 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 15, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 37, 39, 42, 44, 47, 50, 53, 56, 59, 62, 65, 68, 72, 75, 79, 82, 86, 90, 94, 98, 102, 106, 110, 114, 118, 123, 127, 132, 136, 141, 146, 151 ]
[ "nonn", "easy" ]
A360240
[ 1, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2, 2, 3, 1, 1, 3, 2, 1, 3, 2, 2, 3, 3, 1, 3, 3, 2, 3, 3, 3, 4, 1, 1, 4, 2, 1, 4, 2, 2, 4, 3, 1, 4, 3, 2, 4, 3, 3, 4, 4, 1, 4, 4, 2, 4, 4, 3, 4, 4, 4, 5, 1, 1, 5, 2, 1, 5, 2, 2, 5, 3, 1, 5, 3, 2, 5, 3, 3, 5, 4, 1, 5, 4, 2, 5, 4, 3 ]
[ "nonn" ]
A300958
[ 0, 15, 21, 21141, 21156, 21162, 40095, 40110, 40116, 72171, 72186, 72192, 93312, 93327, 93333, 112266, 112281, 112287, 124659, 124674, 124680, 145800, 145815, 145821, 164754, 164769, 164775, 181521, 181536, 181542, 202662, 202677, 202683, 221616, 221631 ]
[ "nonn", "base" ]
A110250
[ 1, 0, 1, 0, -1, 1, 0, -2, 1, 1, 0, -2, 1, 0, 1, 0, 0, -1, 1, -1, 1, 0, 0, -2, 2, -2, 1, 1, 0, 0, 0, 0, -1, 0, 0, 1, 0, 2, 0, -2, 1, 0, -1, -1, 1, 0, 6, -4, -2, -2, 0, 0, 0, 1, 1, 0, 4, -1, -3, 1, -1, -1, -1, 1, 0, 1, 0, -14, 3, 11, -3, 3, 3, 1, -3, -1, -1, 1, 0, -24, 6, 18, -6, 4, 5, 3, -5, -2, -1, 1, 1 ]
[ "sign", "tabl" ]
A145509
[ 9, 97, 9601, 92198401, 8500545331353601, 7.225927093039752e+31, 5.221402235392592e+63 ]
[ "nonn", "easy" ]
A082460
[ 0, 1, 1, 1, 2, 1, 3, 1, 3, 1, 4, 1, 5, 1, 5, 1, 6, 1, 7, 1, 7, 1, 8, 1, 8, 1, 8, 1, 9, 1, 10, 1, 10, 1, 10, 1, 11, 1, 11, 1, 12, 1, 13, 1, 13, 1, 14, 1, 14, 1, 14, 1, 15, 1, 15, 1, 15, 1, 16, 1, 17, 1, 17, 1, 17, 1, 18, 1, 18, 1, 19, 1, 20, 1, 20, 1, 20, 1, 21, 1, 21, 1, 22, 1, 22, 1, 22, 1, 23, 1, 23, 1, 23, 1, 23, 1, 24, 1, 24, 1 ]
[ "nonn" ]
A235148
[ 2, 23, 29, 41, 47, 83, 89, 227, 233, 239, 251, 257, 263, 269, 293, 401, 419, 431, 443, 467, 491, 641, 647, 827, 863, 881, 2027, 2063, 2099, 2111, 2153, 2207, 2273, 2297, 2339, 2357, 2441, 2459, 2543, 2609, 2687, 2693, 2699, 2729, 2801, 2819, 2879, 2927, 2939, 2963 ]
[ "nonn", "base" ]
A112014
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 736, 15642, 15662, 1680129, 1686394 ]
[ "base", "fini", "full", "nonn" ]
A045135
[ 15, 31, 51, 55, 60, 61, 79, 95, 115, 119, 124, 125, 195, 199, 204, 205, 211, 215, 220, 221, 240, 241, 244, 245, 271, 287, 307, 311, 316, 317, 335, 351, 371, 375, 380, 381, 451, 455, 460, 461, 467, 471, 476, 477, 496, 497, 500 ]
[ "nonn", "base" ]
A098111
[ 1, 0, -5, -25, -100, -375, -1375, -5000, -18125, -65625, -237500, -859375, -3109375, -11250000, -40703125, -147265625, -532812500, -1927734375, -6974609375, -25234375000, -91298828125, -330322265625, -1195117187500, -4323974609375, -15644287109375, -56601562500000 ]
[ "easy", "sign" ]
A093876
[ 1, 1, 2, 1, 4, 75656, 1, 1, 1, 2, 1, 2, 1, 2, 1, 1, 1, 136181, 1, 2, 4, 1, 64, 1, 1, 3602, 4, 1, 12, 7, 8, 1, 2, 4267, 2, 9, 1, 22, 1, 1, 1, 1, 1, 1, 1, 4841, 35, 1, 5, 5, 1, 262344, 1, 2, 3, 1, 3, 1, 15, 3, 1, 538, 2, 4, 1, 34, 2, 1, 6, 1, 1, 1, 2, 1, 2, 63, 1, 195, 4, 1, 2, 3, 1, 2, 2, 1, 4, 2, 1, 1, 5, 1, 9, 1, 3, 30, 2, 1, 2, 1, 15, 1, 7, 8, 6, 1, 1, 2, 7, 1, 1, 1, 3, 2, 3, 2, 13, 1, 5, 1, 13, 3, 19, 1, 1, 1, 2, 6, 1, 1, 3, 3, 1, 1, 1, 4, 1, 1, 2, 1, 2 ]
[ "nonn", "cofr", "easy" ]
A038369
[ 0, 1, 135, 144 ]
[ "nice", "nonn", "fini", "base", "full" ]
A112774
[ 4, 10, 22, 34, 46, 58, 82, 94, 106, 118, 142, 166, 178, 202, 214, 226, 262, 274, 298, 334, 346, 358, 382, 394, 454, 466, 478, 502, 514, 526, 538, 562, 586, 622, 634, 694, 706, 718, 766, 778, 802, 838, 862, 886, 898, 922, 934, 958, 982, 1006, 1018, 1042, 1114 ]
[ "easy", "nonn" ]
A192535
[ 1, 3, 13, 27, 183, 217, 507, 757, 819, 1249, 2187, 33673, 34047, 36037, 39159, 47307, 47749, 50079, 53677, 100467, 120289, 141267, 257557, 258579, 263809, 271467, 383319, 414157, 573807, 575329, 583059, 594217, 671581, 673227, 681577 ]
[ "nonn" ]
A378685
[ 1, 1, 8, 88, 1126, 15716, 232069, 3564835, 56382489, 912031280, 15018257510, 250913307393, 4242722219425, 72470224174650, 1248608968982903, 21673752440979880, 378677335852165300, 6654158090059397000, 117523324766568500000, 2.0850953748344052e+21 ]
[ "nonn" ]
A215701
[ 0, 0, 1, 4, 40, 276 ]
[ "nonn" ]
A090317
[ 1, 2, 7, 28, 118, 510, 2235, 9876, 43870, 195556, 873814, 3911168, 17527904, 78622982, 352911939, 1584927828, 7120769526, 32002212252, 143859840114, 646819996008, 2908670252676, 13081556909292, 58839348572574, 264674150692488, 1190649451348908, 5356483791828840, 24098774900561500 ]
[ "easy", "nonn" ]
A028866
[ 4, 9, 25, 49, 169, 289, 1369, 4489, 6889, 11449, 27889, 113569, 134689, 146689, 344569, 2778889, 27777888889, 111113555569, 111133556689, 111333666889, 113344668889, 444444888889, 1111133355666889, 1133444466888889 ]
[ "nonn", "base", "less" ]
A299390
[ 8, 34, 17, 119, 508, 934, 6254, 28963, 110704, 623533, 3058360, 14051037, 74006972, 368797482, 1785366516, 9150874778, 45753745252, 225850943639, 1143328586070, 5721506664853, 28473908883441, 143312977177121, 717428652168039 ]
[ "nonn" ]
A031406
[ 11, 19, 23, 40, 87, 96, 152, 159, 216, 219, 235, 335, 336, 344, 392, 415, 455, 515, 535, 567, 592, 615, 688, 707, 747, 816, 848, 875, 888, 920, 927, 944, 976, 1072, 1080, 1099, 1111, 1143, 1183, 1199, 1200, 1211, 1243, 1320, 1328, 1359, 1360, 1456, 1507, 1547 ]
[ "nonn" ]
A015571
[ 1, -1, 1, -1, 1, -1, 1, -1, 1, -1, 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, 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, 0, 0, 0, 1, -1, 1, -1, 1, -1, 1, -1, 1, -1 ]
[ "sign" ]
A112417
[ 1, 2, 3, 10, 5, 14, 7, 42, 15, 22, 11, 58, 13, 30, 23, 170, 17, 62, 19, 90, 31, 46, 23, 234, 45, 54, 63, 122, 29, 94, 31, 682, 47, 70, 61, 250, 37, 78, 55, 362, 41, 126, 43, 186, 95, 94, 47, 938, 63, 182, 71, 218, 53, 254, 93, 490, 79, 118, 59, 378, 61, 126, 127, 2730 ]
[ "base", "nonn" ]
A324060
[ 1, 3, 5, 6, 7, 8, 33, 9, 13, 10, 14, 11, 23, 33, 12, 16, 31, 13, 17, 31, 40, 14, 18, 27, 65, 23, 15, 33, 52, 32, 42, 16, 26, 31, 41, 38, 28, 17, 32, 37, 112, 41, 149, 79, 35, 18, 121, 27, 203, 65, 49, 23, 40, 19, 26, 33, 87, 52, 50, 41, 24, 42, 41, 20, 32, 79 ]
[ "nonn" ]
A193744
[ 3, 3, 5, 8, 10, 15, 20, 27, 37, 49, 66, 88, 117, 156, 207, 275, 365, 484, 642, 851, 1128, 1495, 1981, 2625, 3478, 4608, 6105, 8088, 10715, 14195, 18805, 24912, 33002, 43719, 57916, 76723, 101637, 134641, 178362, 236280, 313005, 414644, 549287, 727651, 963933, 1276940, 1691586 ]
[ "nonn", "easy" ]
A322815
[ 1, 2, 3, 3, 4, 5, 6, 5, 4, 7, 8, 4, 9, 10, 11, 4, 12, 7, 13, 11, 14, 15, 16, 7, 6, 17, 11, 14, 18, 19, 20, 7, 21, 22, 23, 11, 24, 25, 26, 19, 27, 28, 29, 21, 6, 30, 31, 11, 8, 10, 32, 26, 33, 19, 34, 28, 35, 36, 37, 6, 38, 39, 23, 11, 40, 41, 42, 32, 43, 44, 45, 19, 46, 47, 14, 35, 48, 49, 50, 6, 6, 51, 52, 23, 53, 54, 55, 41, 56, 10, 57, 43, 58, 59, 60, 19, 61, 15, 34, 14 ]
[ "nonn" ]
A371527
[ 1, 1, 3, 8, 7, 3, 4, 8, 6, 1, 7, 0, 7, 1, 9, 6, 2, 1, 8, 0, 9, 6, 8, 9, 5, 0, 8, 5, 7, 4, 2, 0, 4, 3, 1, 8, 7, 6, 3, 7, 8, 8, 8, 9, 4, 7, 9, 1, 5, 7, 3, 2, 5, 1, 3, 7, 4, 4, 1, 3, 4, 4, 2, 4, 2, 6, 4, 9, 2, 2, 8, 1, 6, 7, 4, 2, 2, 2, 2, 2, 6, 7, 4, 0, 0, 7, 8, 6, 2, 3, 9, 3, 3, 8, 4, 0, 9, 2, 1, 7, 6, 4, 4, 3, 9 ]
[ "nonn", "cons" ]
A029390
[ 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 2, 2, 1, 0, 0, 2, 3, 2, 1, 0, 3, 4, 4, 2, 1, 3, 5, 5, 4, 2, 5, 6, 7, 6, 4, 6, 8, 8, 8, 6, 9, 10, 11, 10, 9, 11, 13, 13, 13, 11, 15, 16, 17, 16, 15, 18, 20, 20, 20, 18, 23, 24, 25, 24, 23, 27, 30, 29 ]
[ "nonn" ]
A277296
[ 0, 5, 76, 698, 5088, 32461, 189940, 1046190, 5511440, 28061890, 139089880, 674600980, 3213923072, 15084364221, 69904629316, 320443984742, 1455102018480, 6553035703798, 29296998868904, 130133568013164, 574698326054848, 2524813186117010, 11040163152179976, 48069234287414670, 208481908639356450, 900995206054983400, 3881108155492099600 ]
[ "nonn" ]
A144755
[ 2, 3, 5, 7, 11, 13, 17, 19, 31, 41, 43, 73, 127, 151, 241, 257, 331, 337, 683, 2731, 5419, 8191, 43691, 61681, 65537, 87211, 131071, 174763, 262657, 524287, 599479, 2796203, 15790321, 18837001, 22366891, 715827883, 2147483647, 4278255361 ]
[ "nonn" ]
A031736
[ 842, 3366, 7572, 13460, 21030, 30282, 41216, 53832, 68130, 84110, 101772, 121116, 142142, 164850, 189240, 215312, 243066, 272502, 303620, 336420, 370902, 407066, 444912, 484440, 525650, 568542, 613116, 659372, 707310, 756930, 808232, 861216 ]
[ "nonn" ]
A015862
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 0, 0, 0, 0, 0, 0, 0 ]
[ "sign" ]