id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A353629
[ 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0...
[ "nonn" ]
A168983
[ 1, 18, 306, 5202, 88434, 1503378, 25557426, 434476242, 7386096114, 125563633938, 2134581776946, 36287890208082, 616894133537394, 10487200270135698, 178282404592306880, 3030800878069217000, 51523614927176690000 ]
[ "nonn" ]
A271835
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 11, 20, 36, 61, 97, 243, 425, 700, 1199, 2183, 4115, 14902, 43515, 102827, 214168, 418685, 1223440, 3053628, 9484929, 31351174, 95335734, 260010845, 1305343146, 4437434637, 12553...
[ "nonn" ]
A174391
[ 1, 1, -1, 1, 0, -1, 1, 0, -1, 0, 1, 0, 0, 0, -1, 1, 0, -1, -1, 0, 1, 1, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, -1, 0, 0, 0, 1, 0, 0, 0, 0, 0, -1, 0, 0, 1, 0, 0, 0, -1, -1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, ...
[ "sign", "tabl" ]
A288322
[ 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 7, 140, 840, 2100, 2310, 924, 0, 49, 2156, 42140, 479220, 3598560, 19184676, 75954564, 229873063, 541427264, 1002386336, 1473318476, 1876489398, 3785310858, 20726607804, 136977861097, 786065454860, 3841493...
[ "nonn" ]
A125681
[ 1, 7, 3, 1, 7, 8, 8, 8, 3, 5, 5, 1, 2, 2, 0, 6, 3, 0, 4, 6, 6, 2, 6, 3, 4, 4, 9, 0, 5, 7, 2, 6, 5, 9, 7, 6, 8, 4, 3, 3, 5, 4, 7, 0, 2, 2, 6, 3, 7, 2, 8, 7, 4, 9, 0, 8, 9, 1, 5, 7, 4, 5, 4, 9...
[ "cons", "nonn" ]
A112072
[ 7, 9, 15, 17, 31, 33, 39, 41, 55, 57, 63, 65, 79, 81, 87, 89, 103, 105, 111, 113, 127, 129, 135, 137, 151, 153, 159, 161, 175, 177, 183, 185, 199, 201, 207, 209, 223, 225, 231, 233, 247, 249, 255, 257, 271, 273, 279, 281, ...
[ "nonn" ]
A141749
[ 1, 1, 9, 1, 7, 2, 1, 0, 2, 9, 1, 0, 8, 10, 2, 1, 0, 0, 10, 0, 9, 1, 0, 3, 4, 6, 7, 2, 1, 0, 0, 0, 0, 0, 4, 9, 1, 0, 0, 0, 7, 7, 1, 7, 2, 1, 0, 0, 0, 0, 0, 0, 9, 8, 9, 1, 0, 0, 0, 0, 7, 8, 10, ...
[ "nonn", "tabl" ]
A090354
[ 1, 1, 3, 19, 190, 2574, 43922, 903986, 21784659, 601478195, 18715354049, 647834803569, 24688869993252, 1027073272425876, 46309250293477020, 2249435671825385200, 117101538463333710000, 6.503918951175619e+21 ]
[ "nonn" ]
A082875
[ 4, 9, 36, 49, 841, 5184 ]
[ "easy", "nonn" ]
A046897
[ 1, 3, 4, 3, 6, 12, 8, 3, 13, 18, 12, 12, 14, 24, 24, 3, 18, 39, 20, 18, 32, 36, 24, 12, 31, 42, 40, 24, 30, 72, 32, 3, 48, 54, 48, 39, 38, 60, 56, 18, 42, 96, 44, 36, 78, 72, 48, 12, 57, 93, 72, 42, 54, 120, ...
[ "nonn", "mult" ]
A193177
[ 2, 30, 74, 122, 386, 476, 630, 20132 ]
[ "nonn", "more" ]
A222391
[ 4, 1, 6, 8, 8, 2, 8, 4, 8, 3, 2, 6, 6, 6, 9, 2, 2, 3, 0, 4, 2, 1, 3, 0, 3, 9, 0, 7, 7, 5, 2, 3, 1, 0, 2, 6, 0, 3, 8, 6, 6, 6, 4, 6, 8, 1, 1, 4, 8, 4, 9, 9, 6, 3, 7, 8, 3, 0, 0, 0, 8, 9, 5, 4...
[ "nonn", "cons" ]
A136927
[ 0, 6, 60, 66, 600, 656, 660, 666, 6000, 6560, 6600, 6660, 6666, 60000, 63566, 65600, 66000, 66600, 66660, 66666, 600000, 603656, 604434, 635660, 656000, 660000, 660656, 666000, 666600, 666660, 666666, 6000000, 6036560, 6044340, 6356600, 6560000, ...
[ "base", "nonn" ]
A114615
[ 6999, 7089, 7179, 7269, 7359, 7449, 7539, 7629, 7719, 7809, 7998, 8088, 8178, 8268, 8358, 8448, 8538, 8628, 8718, 8808, 8997, 9087, 9177, 9267, 9357, 9447, 9537, 9627, 9699, 9717, 9789, 9807, 9879, 9969, 9996, 10128, 10167, 10185, 10191 ]
[ "nonn", "base" ]
A105505
[ 5, 10, 29, 34, 53, 58, 77, 96, 101, 120, 125, 139, 144, 163, 168, 187, 192, 206, 211, 230, 235, 254, 273, 278, 297, 302, 321, 340, 345, 364, 369, 388, 407, 412, 431, 436, 455, 474, 479, 498, 503, 522, 541, 546, 565, 570, 584...
[ "nonn", "base" ]
A313305
[ 1, 4, 9, 16, 16, 24, 26, 34, 37, 44, 42, 52, 55, 66, 60, 72, 70, 82, 83, 94, 84, 100, 101, 112, 108, 118, 116, 128, 131, 140, 130, 146, 149, 158, 152, 168, 160, 176, 177, 188, 172, 196, 195, 206, 196, 214, 208, 222, 225,...
[ "nonn" ]
A362182
[ 2, 3, 5, 330, 1206, 1210, 1656, 1718, 1806, 1866, 1926, 2376, 2982, 3162, 3186, 3342, 4012, 4062, 4194, 4326, 4502, 4662, 4810, 5322, 5466, 6172, 6402, 6462, 6534, 6546, 6672, 6756, 7266, 7430, 7866, 8030, 8140, 8286, 8386, 8562, 8586, ...
[ "nonn" ]
A219225
[ 768, 936, 1200, 2856, 3072, 3744, 4536, 4800, 5016, 5376, 6696, 6912, 7056, 7560, 7752, 8184, 8424, 9240, 10800, 11424, 11544, 12288, 12480, 12936, 14976, 16848, 18144, 18696, 19200, 19200, 20064, 21504, 23040, 23400, 24024, 25080, 25704, 259...
[ "nonn" ]
A021767
[ 0, 0, 1, 3, 1, 0, 6, 1, 5, 9, 8, 9, 5, 1, 5, 0, 7, 2, 0, 8, 3, 8, 7, 9, 4, 2, 3, 3, 2, 8, 9, 6, 4, 6, 1, 3, 3, 6, 8, 2, 8, 3, 0, 9, 3, 0, 5, 3, 7, 3, 5, 2, 5, 5, 5, 7, 0, 1, 1, 7, 9, 5, 5, 4...
[ "nonn", "cons", "easy" ]
A029325
[ 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 3, 3, 3, 4, 3, 3, 4, 3, 3, 5, 4, 5, 7, 6, 6, 8, 6, 6, 8, 7, 7, 10, 9, 10, 12, 11, 11, 13, 11, 12, 14, 13, 14, 17, 16, 17, 19, 18, 18, ...
[ "nonn", "easy" ]
A095156
[ 6, 4, 3, 21, 2, 15, 13, 12, 11, 10, 9, 8, 72, 7, 63, 6, 56, 53, 51, 5, 46, 44, 42, 41, 4, 38, 36, 35, 34, 33, 32, 31, 3, 29, 28, 271, 27, 26, 251, 25, 24, 233, 23, 223, 22, 213, 21, 205, 201, 2, 193, 19, 186, 1...
[ "base", "nonn" ]
A149033
[ 1, 1, 3, 10, 34, 126, 491, 1949, 7919, 32903, 138223, 587746, 2526421, 10941149, 47729602, 209562569, 924878572, 4101835581, 18270356562, 81686164214, 366493225290, 1649478891641, 7444911031185, 33690982426856, 152831005271410, 694817195153960, 3165364902881297, ...
[ "nonn", "walk" ]
A261371
[ 11, 13, 29, 53, 67, 71, 89, 101, 103, 137, 191, 193, 227, 229, 233, 269, 281, 359, 431, 449, 461, 463, 499, 569, 593, 641, 643, 659, 683, 701, 719, 769, 821, 823, 857, 859, 877, 967, 1019, 1061, 1091, 1093, 1223, 1289, 1439, 1...
[ "nonn", "base" ]
A228408
[ 0, 0, 0, 0, 0, 29, 230, 1537, 11208, 89657, 724755, 6010150, 55305521, 545054759, 5504044595, 59482056555, 690974195737, 8306302563795, 104653460921783, 1401318441726295, 19525683104731680, 282626170020405630, 4296152288224051000, 67974610534037864000 ]
[ "nonn" ]
A152055
[ 1, 8, 67, 584, 5257, 48488, 455131, 4324328, 41426257, 399036104, 3857575987, 37380013448, 362768079961, 3524108459048, 34256882467147, 333139503472424, 3240562225062817, 31527485889187210, 306765478498163500 ]
[ "nonn" ]
A020215
[ 86, 91, 133, 217, 247, 301, 385, 403, 473, 559, 589, 817, 1045, 1105, 1111, 1333, 1661, 1705, 1729, 2047, 2365, 2626, 2651, 2821, 3553, 3565, 3785, 3913, 4123, 4141, 4681, 5005, 5461, 5719, 6533, 6601, 7471, 7483, 7657, 8029, 8041, 84...
[ "nonn" ]
A173783
[ 192, 7698, 166368, 2580754, 32572756, 357365350, 3544192112, 32580145116, 282359109140, 2335042206624, 18589546217696, 143422674213726, 1077891352444220, 7923134615854816, 57146364209686020, 405497952834408700 ]
[ "nonn", "easy" ]
A036736
[ 1, 1, 1, 19, 265, 3382, 45127, 642124, 9472141, 142620175, 2184923102, 33988562262, 535424509399, 8522588308676, 136861340397600, 2214681188316280, 36077557678826290, 591161620794823000, 9737057245791111000, 161123397926645700000, 2.6772758363614326e+21 ]
[ "nonn" ]
A048480
[ 1, 10, 37, 109, 289, 721, 1729, 4033, 9217, 20737, 46081, 101377, 221185, 479233, 1032193, 2211841, 4718593, 10027009, 21233665, 44826625, 94371841, 198180865, 415236097, 868220929, 1811939329, 3774873601, 7851737089, 16307453953, 33822867457, 70061654017 ]
[ "nonn", "easy" ]
A306482
[ 0, 4, 5, 6, 9, 11, 17, 21, 22, 34, 52, 68, 83, 84, 91, 92, 98 ]
[ "nonn", "base", "more" ]
A129988
[ 1, 2, 4, 9, 20, 44, 96, 209, 456, 999, 2198, 4854, 10752, 23877, 53142, 118517, 264816, 592744, 1328880, 2983565, 6707396, 15096727, 34014866, 76712042, 173150400, 391119273, 884066890, 1999489733, 4524624820, 10243526452, 23200473632 ]
[ "nonn", "easy", "changed" ]
A022885
[ 5, 7, 11, 13, 23, 37, 53, 73, 97, 101, 103, 109, 137, 157, 179, 191, 223, 251, 263, 307, 353, 373, 389, 409, 419, 433, 457, 479, 487, 541, 563, 571, 593, 683, 691, 701, 757, 809, 821, 853, 859, 877, 883, 911, 977, 1019, 1039...
[ "nonn" ]
A022472
[ 0, 1, 3, 2, 3, 6, 6, 6, 12, 13, 12, 23, 29, 33, 50, 69, 76, 108, 150, 172, 226, 323, 385, 518, 698, 884, 1146, 1539, 1961, 2537, 3378, 4341, 5628, 7455, 9662, 12530, 16453, 21436, 27807, 36306, 47519, 61496, 80491, 105100, 13653...
[ "nonn" ]
A313629
[ 1, 5, 10, 14, 20, 25, 32, 36, 41, 46, 51, 59, 63, 69, 74, 78, 86, 89, 95, 101, 104, 113, 115, 121, 128, 130, 140, 141, 147, 155, 156, 167, 167, 173, 182, 182, 194, 193, 199, 209, 208, 221, 219, 225, 236, 234, 248, 245, 2...
[ "nonn" ]
A311677
[ 1, 4, 8, 13, 15, 25, 23, 33, 35, 38, 46, 47, 54, 55, 66, 61, 73, 77, 74, 88, 87, 92, 96, 105, 101, 112, 118, 112, 128, 129, 128, 138, 145, 139, 153, 157, 152, 167, 170, 166, 178, 187, 175, 195, 197, 190, 208, 209, 206, ...
[ "nonn" ]
A054625
[ 1, 6, 21, 76, 336, 1560, 7826, 39996, 210126, 1119796, 6047412, 32981556, 181402676, 1004668776, 5597460306, 31345666736, 176319474366, 995685849696, 5642220380006, 32071565263716, 182807925027504, 1044616697187576, 5982804736593846 ]
[ "nonn" ]
A213566
[ 1, 5, 4, 15, 13, 9, 36, 33, 25, 16, 76, 71, 59, 41, 25, 148, 140, 120, 93, 61, 36, 273, 260, 228, 183, 135, 85, 49, 485, 464, 412, 340, 260, 185, 113, 64, 839, 805, 721, 604, 476, 351, 243, 145, 81, 1424, 1369, 1233, 104...
[ "nonn", "tabl", "easy" ]
A348388
[ 1, 2, 3, 1, 4, 1, 5, 2, 1, 6, 2, 1, 7, 3, 1, 1, 8, 3, 2, 1, 9, 4, 2, 1, 1, 10, 4, 2, 1, 1, 11, 5, 3, 2, 1, 1, 12, 5, 3, 2, 1, 1, 13, 6, 3, 2, 1, 1, 1, 14, 6, 4, 2, 2, 1, 1, 15, 7, 4, 3, 2, 1, ...
[ "nonn", "easy", "tabf" ]
A005868
[ 1, 0, 1, 0, 2, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 1, 7, 1, 8, 2, 10, 2, 11, 3, 13, 4, 14, 5, 16, 6, 18, 7, 20, 8, 22, 10, 24, 11, 26, 13, 29, 14, 31, 16, 34, 18, 36, 20, 39, 22, 42, 24, 45, 26, 48, 29, 51, 3...
[ "nonn", "easy", "nice" ]
A253545
[ 5, 2, 7, 6, 9, 7, 3, 9, 6, 9, 6, 2, 5, 7, 1, 5, 2, 8, 5, 7, 2, 4, 2, 3, 3, 4, 3, 3, 6, 3, 1, 8, 0, 5, 7, 7, 9, 6, 8, 8, 5, 3, 7, 9, 0, 6, 3, 1, 4, 1, 9, 5, 4, 1, 7, 2, 2, 2, 7, 5, 1, 5, 9, 5...
[ "nonn", "cons", "easy" ]
A142735
[ 67, 421, 1129, 1483, 1601, 2309, 2663, 3253, 3371, 3607, 4079, 4787, 5023, 5849, 6203, 6793, 6911, 8209, 8563, 8681, 9743, 10333, 10687, 11159, 11867, 12457, 13873, 14699, 15053, 15289, 15643, 15761, 16823, 18121, 18593, 18947, 19183, 19301, ...
[ "nonn", "easy" ]
A247971
[ 1, 2, 3, 4, 5, 5, 6, 7, 8, 8, 9, 10, 11, 12, 12, 13, 14, 15, 16, 16, 17, 18, 19, 19, 20, 21, 22, 23, 23, 24, 25, 26, 27, 27, 28, 29, 30, 30, 31, 32, 33, 34, 34, 35, 36, 37, 38, 38, 39, 40, 41, 41, 42, 43, 44,...
[ "nonn", "easy" ]
A088810
[ 0, 0, 0, 0, 1, 4, 6, 18, 35, 84, 137, 323, 591, 1313, 2033, 4360, 7406, 15581, 23682, 49184, 84017, 171744, 259818, 528784, 853143, 1727011, 2601181, 5243126, 8784832, 17662987, 26541257, 53279330, 86241323, 172871156, 259534578, 519917139 ]
[ "nonn" ]
A278224
[ 1, 2, 2, 2, 4, 8, 6, 6, 2, 2, 2, 2, 4, 2, 12, 2, 6, 6, 12, 32, 12, 12, 6, 12, 4, 6, 12, 12, 16, 2, 2, 6, 6, 2, 6, 2, 6, 6, 2, 6, 6, 2, 24, 2, 24, 12, 8, 6, 2, 6, 48, 6, 30, 12, 6, 2, 6, 2, 2, 6, 6...
[ "nonn" ]
A168336
[ 5, 5, 12, 12, 19, 19, 26, 26, 33, 33, 40, 40, 47, 47, 54, 54, 61, 61, 68, 68, 75, 75, 82, 82, 89, 89, 96, 96, 103, 103, 110, 110, 117, 117, 124, 124, 131, 131, 138, 138, 145, 145, 152, 152, 159, 159, 166, 166, 173, 173...
[ "nonn", "easy", "less" ]
A262716
[ 31, 29791, 28629151, 27512614111, 26439622160671, 25408476896404830, 24417546297445044000, 2.3465261991844685e+22, 2.2550116774162744e+25, 2.16706622199704e+28, 2.0825506393391553e+31, 2.001331164404928e+34 ]
[ "nonn", "easy" ]
A253200
[ 0, 1, 3, 4, 5, 6, 7, 9, 10, 11, 14, 15, 18, 19, 20, 21, 22, 25, 28, 29, 30, 32, 34, 35, 37, 39, 40, 43, 45, 46, 47, 50, 51, 53, 54, 58, 59, 62, 65, 69, 70, 72, 74, 75, 76, 80, 81, 82, 88, 91, 93, 97, 98, 101, ...
[ "nonn" ]
A342118
[ 31, 1310409, 298965241, 1939455002, 4578434282, 7077112564, 7973995681, 11430679681 ]
[ "nonn", "hard", "more" ]
A191571
[ 2, 8, 64, 775, 12956, 435303, 27256988, 2944205484, 528310229714, 165642950895264, 90217673507084290 ]
[ "nonn" ]
A176017
[ 1, 1, 2, 6, 7, 8, 3, 1, 7, 0, 5, 2, 8, 0, 0, 8, 7, 1, 8, 6, 0, 0, 4, 5, 6, 3, 0, 7, 6, 7, 2, 5, 9, 3, 5, 4, 0, 0, 6, 2, 5, 6, 2, 6, 3, 0, 5, 3, 9, 6, 0, 7, 3, 9, 9, 3, 5, 1, 9, 7, 8, 2, 5, 9...
[ "cons", "nonn" ]
A386953
[ 1, 3, 6, 10, 15, 21, 28, 36, 45, 49, 57, 69, 78, 90, 105, 119, 135, 153, 160, 174, 195, 209, 228, 252, 273, 297, 324, 328, 336, 348, 360, 378, 402, 422, 450, 486, 495, 513, 540, 560, 588, 624, 655, 693, 738, 752, 780, 822,...
[ "nonn" ]
A178715
[ 1, 2, 3, 4, 5, 6, 9, 12, 16, 20, 27, 36, 48, 64, 81, 108, 144, 192, 256, 324, 432, 576, 768, 1024, 1296, 1728, 2304, 3072, 4096, 5184, 6912, 9216, 12288, 16384, 20736, 27648, 36864, 49152, 65536, 82944, 110592, 147456, 196608, 262...
[ "nonn", "nice", "easy" ]
A166132
[ 1, 37, 469, 4789, 45397, 417781, 3796885, 34319413, 309464533, 2787540085, 25097297941, 225913430197, 2033371866709, 18300950780149, 164710972940437, 1482408420140341, 13341714435968724, 120075584542541170 ]
[ "nonn", "easy" ]
A341701
[ -1, -1, 2, 3, 3, 5, -1, 7, -1, -1, 9, 11, -1, 13, -1, -1, -1, 17, -1, 19, -1, -1, 21, 23, 23, 13, -1, 23, -1, 29, -1, 31, -1, -1, 33, -1, -1, 37, -1, -1, -1, 41, 41, 43, -1, -1, 39, 47, 41, -1, -1, 47, 37, 53, ...
[ "sign", "base" ]
A271837
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 13, 22, 38, 63, 99, 148, 212, 505, 842, 1284, 1966, 3153, 5312, 9200, 15968, 51401, 141522, 319386, 631223, 1149722, 2003800, 3442200, 9402302, 209085...
[ "nonn" ]
A295412
[ 7, 126, 1534, 19026, 240439, 3019079, 37927609, 476686533, 5990217198, 75274793595, 945936754846, 11887043481205, 149377582878265, 1877141810399248, 23588956324272430, 296428780394920500 ]
[ "nonn" ]
A371023
[ 1, 0, 2, 3, 112, 665, 23016, 292957, 10710960, 223877313, 9010822600, 266949248621, 12012620436312, 461111201730049, 23286625765980864, 1093225826724243100, 61822510319788950000, 3.415325919719803e+21, 2.151628650228316e+23 ]
[ "nonn" ]
A245153
[ 1, 1, 1, 28, 109, 1036, 12421, 189568, 2377369, 50888656, 889772041, 21056972608, 463426778629, 13171920918976, 338302052475661, 11024635871323648, 331174000888419900, 12111179923298826000, 413871819030803900000, 1.6886967133601995e+22 ]
[ "nonn" ]
A194863
[ 1, 2, 3, 5, 6, 4, 8, 10, 7, 9, 12, 14, 11, 13, 15, 18, 20, 16, 19, 21, 17, 24, 27, 22, 25, 28, 23, 26, 31, 34, 29, 32, 35, 30, 33, 36, 40, 43, 37, 41, 44, 38, 42, 45, 39, 49, 53, 46, 50, 54, 47, 51, 55, 48, 5...
[ "nonn", "tabl" ]
A128647
[ 1, 1, 3, 7, 41, 3, 53, 437, 5167, 34189, 36037, 3833, 3987, 11521, 274223, 3458639, 103063291, 100392623, 34273501, 33510453, 308270747, 302107667, 12626774467, 12402802537, 25216220279, 124110148411, 2142721739387, 111888942151111 ]
[ "frac", "nonn" ]
A252802
[ 3, 11, 19 ]
[ "nonn", "hard", "more", "bref" ]
A003257
[ 1, 3, 4, 6, 8, 10, 11, 13, 15, 16, 18, 20, 22, 23, 25, 27, 29, 30, 32, 34, 35, 37, 39, 41, 42, 44, 46, 48, 50, 52, 53, 55, 57, 59, 60, 62, 64, 65, 67, 69, 71, 72, 74, 76, 78, 79, 81, 83, 84, 86, 88, 90, 91, 93,...
[ "nonn" ]
A218586
[ 1, 13, 449, 56629, 28543403, 57707873919, 467122877883141, 15124271280844677000, 1.9581733563358522e+24, 1.0138759327265643e+30 ]
[ "nonn" ]
A115194
[ 1, 7, 45, 291, 1917, 12867, 87805, 607747, 4257789, 30140419, 215277565, 1549615107, 11230642173, 81882660867, 600196448253, 4420404117507, 32695452696573, 242766809923587, 1808890431799293, 13521381274681348 ]
[ "nonn", "easy" ]
A328168
[ 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 35, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 65, 66, 69, 70, 72, 75, 77, 78, 81, 84, 87, 90, 91, 93, 95, 96, 99, 102, 105, 108, 111, 114, 117, 120, 123, 126, 129, 130, 132, 1...
[ "nonn" ]
A227890
[ 3, 7, 163, 353, 5021, 12739, 32719, 49681, 52391, 78901, 113501, 252913, 361091, 452807, 551917, 993841, 1559797, 1956979, 2193127, 3463037, 4067983, 5003837, 5138953, 6115363, 6723271, 7251857, 7447043, 7578607, 8426989, 9479801, 11295847, 12186593, 1...
[ "nonn" ]
A289551
[ 9, 249, 17, 2, 157, 116, 227, 91, 216, 65, 86, 197, 99, 86, 136, 192 ]
[ "fini", "full", "nonn" ]
A220791
[ 1, 12, 26208, 9726417792, 610296923230525400, 6.471875909051512e+27, 1.1598637276362102e+40, 3.512938445418644e+54 ]
[ "nonn" ]
A020248
[ 21, 91, 169, 485, 1183, 1247, 2047, 5551, 11557, 14111, 15229, 17767, 19909, 21667, 23651, 38503, 47197, 49141, 53131, 64907, 70579, 72581, 90851, 100711, 109061, 144433, 146611, 153553, 157753, 158237, 163831, 191959, 204263, 222529, 223721 ]
[ "nonn" ]
A082711
[ 3, 5, 9, 29, 65, 725, 1787, 7277, 19463, 24215, 51779, 131393 ]
[ "nonn", "base", "hard", "more" ]
A360395
[ 1, 6, 9, 15, 19, 24, 27, 31, 36, 42, 45, 51, 55, 60, 66, 69, 73, 78, 81, 87, 91, 96, 99, 103, 108, 114, 117, 121, 126, 129, 135, 139, 144, 150, 153, 159, 163, 168, 171, 175, 180, 186, 189, 195, 199, 204, 210, 213, 217, ...
[ "nonn", "easy" ]
A299778
[ 1, 3, 2, 2, 7, 0, 3, 3, 12, 0, 0, 4, 0, 4, 15, 0, 0, 5, 3, 5, 9, 0, 9, 0, 6, 0, 0, 6, 28, 0, 0, 0, 7, 0, 0, 7, 12, 0, 12, 0, 8, 8, 0, 0, 8, 31, 0, 0, 0, 0, 9, 0, 0, 0, 9, 39, 0, 0, 0, 0, 10, 0, ...
[ "nonn", "tabf" ]
A065377
[ 2, 5, 13, 31, 37, 61, 127, 379, 439, 571, 829, 991, 1549, 3319, 7549 ]
[ "nonn" ]
A282141
[ 3, 5, 27, 7, 10, 11, 9, 25, 14, 13, 20, 17, 15, 21, 7625597484987, 19, 24, 23, 28, 22, 26, 29, 50, 32, 33, 3125, 44, 31, 42, 37, 49, 34, 35, 38, 100, 41, 39, 46, 45, 43, 66, 47, 52, 56, 51, 53, 80, 121, 98, 55, 54, ...
[ "nonn" ]
A068772
[ 1, 1, 20, 410, 8600, 184200, 4020000, 89205000, 2008700000, 45816140000, 1056825200000, 24618524200000, 578457724000000, 13695679012000000, 326448619920000000, 7827776361090000000, 188701194087000000000 ]
[ "nonn", "easy" ]
A125636
[ 5, 17, 7, 19, 3, 19, 131, 127, 263, 41, 229, 691, 313, 19, 53, 521, 53, 601, 1301, 11, 619, 31, 269, 3187, 53, 181, 43, 317, 499, 373, 911, 659, 19, 3659, 313, 751, 233, 4373, 3307, 419, 2591, 313, 1249, 2897, 349, 709, 331,...
[ "nonn" ]
A200987
[ 1, 21, 140, 1095, 4919, 27000, 97341, 383172, 1188521, 3704820, 9947816, 27240277, 65292069, 157646021, 349738426, 770969390, 1585648871, 3256248216, 6303135880, 12177430692, 22459794938, 41128002746, 72582886199, 127586136583 ]
[ "nonn" ]
A131837
[ 0, 0, 0, 2, 2, 1, 2, 2, 1, 1, 1, 2, 2, 1, 3, 2, 1, 2, 2, 2, 1, 1, 3, 2, 1, 1, 1, 2, 2, 2, 2, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1...
[ "easy", "nonn", "base" ]
A252329
[ 6089, 6222, 10070, 22016, 68675, 180469, 503439, 1603276, 4554309, 13198911, 42321262, 123032456, 365923870, 1183764527, 3477836469, 10490088213, 34100824690, 100813753401, 306346399367, 998375745118, 2961333456864 ]
[ "nonn" ]
A130389
[ 0, 1, 2, 3, 4, 5, 8, 7, 6, 9, 10, 13, 12, 11, 21, 22, 20, 17, 18, 19, 15, 14, 16, 23, 24, 27, 26, 25, 35, 36, 34, 31, 32, 33, 29, 28, 30, 58, 59, 62, 63, 64, 57, 61, 54, 45, 46, 55, 50, 49, 48, 56, 60, 52, 40...
[ "nonn" ]
A363478
[ 1, 1, 9, 142, 3481, 115476, 4849639, 246746662, 14756605329, 1014635520424, 78869009859751, 6839463570354306, 654661145565724300, 68559809182824170000, 7.797979656027303e+21, 9.572751394946982e+23, 1.2615292757506401e+26 ]
[ "nonn" ]
A074068
[ 1, 2, 3, 10, 9, 8, 7, 6, 5, 4, 17, 16, 15, 14, 13, 12, 11, 24, 23, 22, 21, 20, 19, 18, 31, 30, 29, 28, 27, 26, 25, 38, 37, 36, 35, 34, 33, 32, 45, 44, 43, 42, 41, 40, 39, 52, 51, 50, 49, 48, 47, 46, 59, 58, 5...
[ "nonn", "easy", "look" ]
A121770
[ 0, 8, 0, 96, 450, 3712, 25844, 177672, 1175964, 7549056, 47319912, 290955560, 1761537504, 10531953720, 62322591732, 365632317656, 2129522579042, 12325749221768, 70958283093148, 406583090893552, 2320051862202586 ]
[ "nonn" ]
A280768
[ 1, 2, 6, 23, 97, 446, 2140, 10662, 54482 ]
[ "nonn", "more" ]
A341711
[ 1, 5, 19, 59, 165, 419, 1001, 2257, 4877, 10133, 20399, 39881, 76085, 141877, 259373, 465493, 821813, 1428725, 2449573, 4145249, 6931259, 11459483, 18749007, 30373189, 48752125, 77568683, 122406223, 191651957, 297856813, 459652759, 704595749, 1073152385 ...
[ "nonn" ]
A343559
[ 1, 1, 2, 2, 1, 1, 2, 3, 3, 3, 2, 1, 1, 2, 1, 2, 3, 4, 4, 4, 4, 3, 2, 1, 1, 1, 2, 3, 3, 2, 1, 2, 3, 4, 5, 5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 2, 3, 4, 4, 4, 3, 2, 2, 3, 1, 2, 3, 4, 5, 6, 6, 6, 6...
[ "nonn", "look", "tabf" ]
A234215
[ 93760, 1029224, 10151836, 128575264, 1394066584, 20127064876, 232097384988, 3785005344428, 45442038074040, 819238398602984, 10067136828963148, 195309894033504480, 2428832890010912000, 49512238307922210000 ]
[ "nonn" ]
A275873
[ 1, 1, 1, 3, 6, 14, 34, 81, 193, 461, 1101, 2631, 6288, 15029, 35921, 85856, 205208, 490477, 1172311, 2801993, 6697170, 16007210, 38259559, 91445908, 218569015, 522411722, 1248639967, 2984431055, 7133224115, 17049442704, 40750646810, 97399970443, 232800...
[ "easy", "nonn" ]
A322301
[ 3, 7, 13, 127, 3313, 23473, 819739 ]
[ "nonn", "more" ]
A318092
[ 0, 5, 45, 1563, 73788, 8985801, 2154127036, 1097965368750, 1190615089872919, 2722471379059199000 ]
[ "nonn" ]
A334854
[ 1, 2, 7, 32, 149, 240, -12725, -378880, -8550135, -178474240, -3550577425, -65428992000, -985800819875, -4641229465600, 548638404441075, 36708748623872000, 1716785996161588700, 69798035394846720000, 2.5715984531322196e+21, 8.4313566554398e+22 ]
[ "sign" ]
A389068
[ 1, 5, 7, 7, 2, 3, 2, 5, 1, 8, 1, 3, 4, 5, 5, 4, 1, 9, 1, 4, 8, 6, 0, 9, 4, 6, 4, 2, 0, 3, 8, 2, 2, 8, 7, 5, 0, 1, 4, 7, 1, 9, 0, 8, 0, 9, 7, 5, 7, 8, 4, 7, 7, 6, 0, 6, 3, 8, 4, 2, 8, 4, 7, 7...
[ "nonn", "cons" ]
A161479
[ 85, 113, 173, 337, 565, 953, 1937, 3277, 5545, 11285, 19097, 32317, 65773, 111305, 188357, 383353, 648733, 1097825, 2234345, 3781093, 6398593, 13022717, 22037825, 37293733, 75901957, 128445857, 217363805, 442389025, 748637317, 1266889097 ]
[ "nonn" ]
A169832
[ 0, 3, 26, 99, 282, 695, 1578, 3411, 7154, 14727, 29970, 60563, 121866, 244599, 490202, 981555, 1964418, 3930311, 7862274, 15726387, 31454810, 62911863, 125826186, 251655059, 503313042, 1006629255, 2013261938, 4026527571, 8053059114, 16106122487, 3221224953...
[ "nonn" ]
A162354
[ 3, 19, 109, 163, 307, 523, 613, 631, 1063, 1117, 1171, 1567, 1657, 1693, 1783, 1801, 1873, 2017, 2251, 2269, 2287, 2521, 2683, 3061, 3079, 3169, 3187, 3457, 3547, 3691, 3709, 3907, 4051, 4357, 4861, 5077, 5167, 5347, 5437, 5563, 5581, ...
[ "nonn", "base" ]
A175182
[ 1, 3, 2, 6, 12, 6, 16, 12, 6, 12, 8, 6, 52, 48, 12, 24, 16, 6, 40, 12, 16, 24, 22, 12, 60, 156, 18, 48, 28, 12, 64, 48, 8, 48, 48, 6, 76, 120, 52, 12, 28, 48, 42, 24, 12, 66, 96, 24, 112, 60, 16, 156, 26, 18, ...
[ "nonn", "easy" ]
A147423
[ 1, 1, 1, 1, 5, 1, 9, 1, 17, 1, 189, 25, 1029, 149, 6290 ]
[ "nonn" ]
A021004
[ 4, 10, 25, 62, 154, 383, 953, 2371, 5899, 14677, 36517, 90856, 226054, 562433, 1399360, 3481674, 8662570, 21552885, 53624600, 133420548, 331956651, 825923891, 2054937811, 5112782731, 12720845913, 31650067929, 78746870040, 195925947300, 487473048845 ]
[ "nonn" ]
A365701
[ 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 5, 10, 16, 23, 31, 62, 128, 243, 423, 686, 1192, 2223, 4223, 7843, 13991, 24856, 45108, 83673, 156223, 288535, 527971, 966803, 1784663, 3319988, 6183424, 11483613, 21284475, 39499855, 73558147, 137347615, 2...
[ "nonn" ]