id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A177633
[ 1, 20, 1680, 368168, 166221670, 134195139015, 176210700176028, 351584685612733950 ]
[ "nonn" ]
A378379
[ 1, 1, 2, 3, 4, 6, 7, 9, 10, 12, 14, 16, 18, 20, 23, 25, 28, 30, 33, 35, 38, 41, 44, 47, 50, 53, 56, 60, 63, 67, 70, 74, 77, 81, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 125, 129, 134, 138, 143, 147, 152, 156, ...
[ "nonn" ]
A351187
[ 1, 1, 1, -5, 25, -131, 793, -6137, 60049, -670919, 7930321, -96775853, 1225237609, -16333089227, 232150489129, -3531321746465, 57178717416097, -975918663642767, 17400776511175200, -322309002081819200, 6188520430773390000, -123166171374344930000, 2.5422315992823554e+21 ]
[ "sign" ]
A095232
[ 1, 10, 500, 166666, 416665000, 8333300000000, 1388883333333333200, 1.9841190476190477e+24, 2.4801488095238095e+31, 2.7557208994708994e+39, 2.7557208994708995e+48, 2.5052008177008178e+58 ]
[ "nonn" ]
A228880
[ 0, 3, 8, 15, 20, 24, 35, 48, 63, 80, 84, 99, 120, 128, 143, 144, 168, 180, 195, 224, 240, 243, 255, 275, 288, 308, 320, 323, 360, 384, 399, 440, 468, 483, 495, 528, 560, 575, 600, 624, 648, 660, 675, 728, 735, 768, 783, 81...
[ "nonn" ]
A355669
[ 1, 6, 222, 331824, 24883200120, 139314069504005400, 8.260641125390352e+25, 6.984964247141514e+36, 1.0911068841557131e+50, 3.959408661224252e+65 ]
[ "nonn" ]
A217720
[ 2, 8, 28, 116, 474, 2001, 8508, 37162, 163730, 729683, 3269602, 14773831 ]
[ "nonn", "more" ]
A008172
[ 1, 4, 11, 23, 39, 62, 93, 119, 153, 204, 254, 301, 350, 418, 497, 559, 624, 705, 816, 919, 986, 1067, 1187, 1332, 1450, 1538, 1653, 1803, 1968, 2100, 2208, 2366, 2538, 2715, 2875, 3019, 3213, 3385, 3574, 3772, 3967, 4189, 4354, 45...
[ "nonn" ]
A220660
[ 0, 0, 1, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,...
[ "nonn", "tabf" ]
A042368
[ 26, 27, 53, 80, 4213, 4293, 8506, 12799, 674054, 686853, 1360907, 2047760, 107844427, 109892187, 217736614, 327628801, 17254434266, 17582063067, 34836497333, 52418560400, 2760601638133, 2813020198533 ]
[ "nonn", "cofr", "frac", "easy" ]
A061830
[ 0, 20, 40, 60, 80, 200, 220, 240, 260, 280, 400, 420, 440, 460, 480, 600, 620, 640, 660, 680, 800, 820, 840, 860, 880, 2000, 2020, 2040, 2060, 2080, 2200, 2220, 2240, 2260, 2280, 2400, 2420, 2440, 2460, 2480, 2600, 2620, 2640, 266...
[ "nonn", "base", "easy" ]
A033803
[ 1, 1, 1, 2, 1, 2, 3, 3, 1, 2, 3, 2, 6, 4, 4, 5, 6, 6, 6, 4, 5, 8, 5, 8, 9, 9, 8, 14, 8, 8, 11, 9, 11, 12, 15, 14, 16, 12, 19, 16, 18, 15, 19, 18, 15, 29, 22, 22, 21, 25, 19, 23, 27, 22, 25, 25, 31, 35, ...
[ "nonn" ]
A087936
[ 6, 0, 0, 0, 0, 5, 6, 0, 0, 0, 5, 11, 6, 0, 0, 5, 16, 17, 6, 0, 5, 21, 33, 23, 6, 5, 26, 54, 56, 29, 11, 31, 80, 110, 85, 40, 42, 111, 190, 195, 125, 82, 153, 301, 385, 320, 207, 235, 454, 686, 705, 527, 442, 68...
[ "nonn", "easy" ]
A269587
[ 128, 1889, 13946, 67763, 248324, 745013, 1927694, 4453031, 9406088, 18482249, 34214498, 60251099, 101688716, 165466013, 260822774, 399829583, 597993104, 874942001, 1255198538, 1769040899, 2453461268, 3353224709, 4522033886 ]
[ "nonn" ]
A067459
[ 0, 0, 1, 7, 17, 15, 43, 58, 66, 90, 189, 211, 273, 336, 431, 398, 588, 689, 910, 872, 1199, 1435, 1438, 1862, 2007, 2079, 2208, 2764, 3329, 2964, 4356, 3945, 4359, 4633, 5330, 5855, 6210, 7491, 7821, 7406, 9610, 9373, 10309, 10606...
[ "easy", "nonn" ]
A218076
[ 3, 6, 12, 19, 38, 42, 68, 243, 384, 515, 740, 1709, 5151, 11049, 45641, 94729, 185610, 644593, 726681, 2296396, 3098358, 6178778, 15743325, 22436908, 80141430, 84300971, 127495932, 177416979, 198423144, 275354607 ]
[ "base", "nonn" ]
A044262
[ 11, 92, 99, 173, 254, 335, 416, 497, 578, 659, 740, 821, 828, 891, 983, 1064, 1145, 1226, 1307, 1388, 1469, 1550, 1557, 1631, 1712, 1793, 1874, 1955, 2036, 2117, 2198, 2279, 2286, 2360, 2441, 2522, 2603, 2684, 2765, 2846 ]
[ "nonn", "base" ]
A014460
[ 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, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...
[ "sign" ]
A311302
[ 1, 4, 8, 12, 16, 21, 26, 30, 35, 40, 44, 48, 52, 55, 59, 65, 68, 72, 79, 84, 88, 92, 96, 97, 101, 109, 110, 114, 123, 128, 132, 136, 140, 139, 143, 153, 152, 156, 167, 172, 176, 180, 184, 181, 185, 197, 194, 198, 211, ...
[ "nonn" ]
A067167
[ 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 2, 1, 0, 2, 1, 0, 2, 1, 4, 1, 5, 0, 7, 0, 8, 3, 9, 2, 11, 5, 14, 5, 16, 1, 21, 12, 18, 13, 25, 6, 22, 11, 29, 15, 22, 9, 31, 14, 43, 22, 52, 16, 52, 30, 69, 38, 65, 36, 7...
[ "easy", "nonn" ]
A109920
[ 1, 2, 1, 3, 4, 5, 6, 7, 360, 11, 12, 13, 1680, 17, 18, 19, 4620, 23, 491400, 29, 30, 31, 1884960, 37, 29640, 41, 42, 43, 45540, 47, 12994800, 53, 45821160, 59, 60, 61, 89369280, 67, 164220, 71, 72, 73, 211110900, 79, 265680, 8...
[ "easy", "nonn" ]
A216188
[ 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 2, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 1, 0, 1, 0, 1, 0, 1, 0, 1...
[ "nonn", "base" ]
A327836
[ 1, 18, 64, 1250, 3888, 235298, 2097152, 86093442, 250000000, 51874849202, 743008370688, 46596170244962, 396857386627072, 58385852050781250, 1152921504606847000, 97322383751333740000, 273238944967337050000, 2.082547005958225e+23, 5.24288e+24, 5.564368588939031e+26 ]
[ "nonn" ]
A245676
[ 1, 3, 2, 6, 3, 7, 5, 11, 5, 10, 7, 14, 7, 16, 11, 20, 9, 17, 13, 22, 12, 25, 18, 27, 14, 24, 20, 31, 18, 36, 26, 37, 19, 34, 28, 38, 24, 45, 34, 47, 26, 41, 36, 49, 35, 61, 44, 54, 32, 54, 45, 56, 40, 71, 56,...
[ "nonn" ]
A061181
[ 1, 27, 315, 2534, 16407, 91959, 464723, 2171850, 9546570, 39940460, 160437690, 622844730, 2348773525, 8638447293, 31086197469, 109744786482, 380920122009, 1302304276665, 4392297900647 ]
[ "nonn", "easy" ]
A361429
[ 1, 1, 2, 1, 3, 4, 1, 2, 5, 3, 1, 4, 2, 6, 7, 1, 3, 4, 1, 2, 5, 8, 6, 1, 3, 4, 1, 2, 7, 5, 9, 10, 1, 3, 4, 1, 2, 6, 7, 1, 3, 4, 1, 2, 5, 8, 11, 9, 1, 3, 4, 1, 2, 6, 7, 1, 3, 4, 1, 2, 5, 10, 8, ...
[ "nonn" ]
A122653
[ 0, 6, 60, 594, 5880, 58206, 576180, 5703594, 56459760, 558894006, 5532480300, 54765908994, 542126609640, 5366500187406, 53122875264420, 525862252456794, 5205499649303520, 51529134240578410, 510085842756480500, 5049329293324227000, 49983207090485790000 ]
[ "nonn", "easy" ]
A047921
[ 1, 1, 2, 5, 1, 21, 2, 1, 106, 11, 2, 1, 643, 62, 12, 2, 1, 4547, 406, 71, 13, 2, 1, 36696, 3046, 481, 80, 14, 2, 1, 332769, 25737, 3708, 559, 89, 15, 2, 1, 3349507, 242094, 32028, 4414, 640, 98, 16, 2, 1, 37054436, 25107...
[ "nonn", "tabf", "nice", "easy" ]
A327506
[ 1, 0, 0, 0, 0, 1, 15, 140, 1050, 6951, 42651, 253660, 1594230, 12463451, 134921787, 1806386946, 25524454410, 354189159871, 4751404201923, 62042283083648, 803415873180606, 10624141898153092, 148849893975447800, 2279247411153872600, 38395707003954900000 ]
[ "nonn" ]
A049883
[ 3, 5, 11, 43, 683, 2731, 43691, 174763, 2796203, 715827883, 2932031007403, 768614336404564600, 2.014876366024382e+23, 8.451004001521529e+29, 5.671372782015641e+37 ]
[ "nonn" ]
A271400
[ 0, 0, 8, 216, 6048, 203256, 8627472, 475098048, 34505348760, 3341298530016, 434656549010376, 76372500634028290, 18198479103071529000, 5.898858710813046e+21, 2.6071477753222323e+24 ]
[ "nonn" ]
A340560
[ 1, 1, 1, 1, 8, 1, 1, 49, 49, 1, 1, 288, 1296, 288, 1, 1, 1681, 30625, 30625, 1681, 1, 1, 9800, 707281, 2654208, 707281, 9800, 1, 1, 57121, 16257024, 219069601, 219069601, 16257024, 57121, 1, 1, 332928, 373301041, 17860500000, 6250000000...
[ "nonn", "tabl" ]
A220428
[ 2, 23, 236, 2103, 18366, 155250, 1286012, 10530541, 85522873, 690893996, 5562055980, 44675368067, 358307397221, 2870920452221, 22988510045507, 184001223691193, 1472357876261742, 11779577116001434, 94231542167997820 ]
[ "nonn" ]
A235084
[ 1078, 2002, 3610, 7046, 13446, 27218, 53882, 111782, 226726, 478402, 986794, 2108630, 4404870, 9510434, 20077706, 43752230, 93259894, 205022194, 441124138, 978176486, 2124530262, 4751604194, 10419142682, 23500946774, 52030658038 ]
[ "nonn" ]
A053220
[ 1, 5, 16, 44, 112, 272, 640, 1472, 3328, 7424, 16384, 35840, 77824, 167936, 360448, 770048, 1638400, 3473408, 7340032, 15466496, 32505856, 68157440, 142606336, 297795584, 620756992, 1291845632, 2684354560, 5570035712, 11542724608, 23890755584, 49392123904 ...
[ "nonn", "easy" ]
A290264
[ 32465047, 37091581, 146742847, 239659891, 245333251, 272213797, 1060690651, 1541736811, 2002738207, 2480351677, 2636566351, 4421955007, 6168859201, 8158683037, 10367633527, 10623394321, 11452116817, 11691059641, 11892876841, 13551877831, 15043908637 ]
[ "nonn" ]
A385558
[ 1, 8, 9, 16, 25, 72, 49, 32, 27, 200, 11, 144, 13, 392, 225, 64, 17, 216, 19, 400, 441, 88, 23, 288, 125, 104, 81, 784, 29, 1800, 31, 128, 99, 136, 1225, 432, 37, 152, 117, 800, 41, 3528, 43, 176, 675, 184, 47, 576, 343,...
[ "nonn", "easy", "mult" ]
A320554
[ 5, 17, 45, 121, 336, 901, 2347, 6014, 15314, 38766, 97531, 244054, 608339, 1511919, 3748379, 9273353, 22901665, 56477538, 139114445, 342325451, 841676972, 2067997764, 5078117000, 12463618356, 30577931115, 74993361731, 183870516407, 450708620604, 1104563863868 ...
[ "nonn", "easy" ]
A052693
[ 1, 2, 12, 102, 1176, 16920, 292320, 5891760, 135717120, 3517032960, 101268921600, 3207514464000, 110828037196800, 4148515981209600, 167232459621427200, 7222900141416960000, 332760193091149800000 ]
[ "easy", "nonn" ]
A226355
[ 1, 9, 21, 33, 49, 61, 81, 93, 113, 129, 149, 161, 189, 201, 221, 241, 265, 277, 305, 317, 345, 365, 385, 397, 433, 449, 469, 489, 517, 529, 565, 577, 605, 625, 645, 665, 705, 717, 737, 757, 793, 805, 841, 853, 881, 909, 929,...
[ "nonn" ]
A385069
[ 1, 1, 2, 3, 5, 7, 10, 13, 17, 22, 28, 36, 45, 56, 69, 86, 106, 130, 159, 192, 232, 279, 333, 397, 472, 557, 657, 773, 905, 1059, 1236, 1437, 1669, 1935, 2236, 2582, 2976, 3422, 3930, 4507, 5157, 5894, 6728, 7664, 8721, 9911, ...
[ "nonn" ]
A171042
[ 2, 3, 5, 7, 88, 83, 87, 89, 23, 29, 38, 37, 48, 43, 47, 53, 59, 68, 67, 78, 73, 79, 13, 19, 97, 808, 803, 807, 809, 883, 827, 838, 837, 839, 849, 858, 857, 863, 867, 873, 879, 818, 898, 893, 897, 899, 288, 223, 227, 22...
[ "nonn", "base", "easy" ]
A035464
[ 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 3, 0, 2, 0, 3, 0, 4, 0, 5, 0, 5, 0, 8, 0, 8, 0, 11, 0, 12, 0, 15, 0, 17, 0, 22, 0, 23, 0, 30, 0, 34, 0, 40, 0, 45, 0, 56, 0, 61, 0, 73, 0, 83, 0, 98, 0, 109, 0, 130,...
[ "nonn" ]
A154813
[ 2, 11, 41, 43, 59, 101, 127, 173, 211, 223, 241, 263, 307, 311, 313, 317, 389, 419, 487, 557, 601, 613, 617, 619, 647, 673, 677, 727, 739, 751, 757, 761, 827, 839, 853, 857, 883, 929, 953, 971, 1013, 1021, 1033, 1039, 1061, 10...
[ "nonn", "base", "less" ]
A153277
[ 1, 1, 2, 1, 3, 5, 1, 4, 12, 15, 1, 5, 22, 60, 52, 1, 6, 35, 154, 358, 203, 1, 7, 51, 315, 1304, 2471, 877, 1, 8, 70, 561, 3455, 12915, 19302, 4140, 1, 9, 92, 910, 7556, 44590, 146115, 167894, 21147, 1, 10, 117, 1380, 1...
[ "easy", "nonn", "tabl" ]
A030091
[ 94583, 100469, 102953, 107251, 110923, 184903, 279863, 285101, 406951, 459521, 493621, 499423, 504821, 684581, 752681, 758141, 758941, 786431, 836291, 843701, 928637, 976513, 980261, 1008947, 1009859, 1024399, 1029647 ]
[ "nonn", "base", "nice" ]
A182892
[ 1, 1, 1, 3, 7, 15, 35, 83, 197, 473, 1145, 2787, 6819, 16759, 41345, 102341, 254075, 632437, 1577967, 3945517, 9884379, 24806201, 62355121, 156974319, 395712759, 998809135, 2524043569, 6385400005, 16170553755, 40990092629, 103997889735 ]
[ "nonn" ]
A185891
[ 27, 588, 588, 12900, 28086, 12900, 282672, 1367896, 1367896, 282672, 6195480, 66642628, 151319356, 66642628, 6195480, 135783240, 3246601822, 16772497838, 16772497838, 3246601822, 135783240, 2975926392, 158165462152, 1859643383374 ]
[ "nonn", "tabl" ]
A242440
[ 3, 1, 8, 7, 5, 9, 0, 6, 0, 9, 8, 0, 3, 8, 6, 6, 2, 4, 8, 1, 1, 9, 7, 2, 1, 7, 2, 4, 7, 6, 2, 1, 2, 5, 4, 3, 2, 2, 5, 3, 5, 0, 7, 7, 4, 6, 9, 9, 6, 8, 2, 2, 8, 2, 9, 0, 2, 1, 4, 1, 8, 1, 5, 8...
[ "nonn", "cons" ]
A063088
[ 0, -1, -1, -2, 0, -2, 2, 2, 5, 5, 13, 11, 21, 23, 27, 30, 44, 44, 60, 62, 70, 76, 96, 96, 113, 121, 135, 141, 167, 167, 195, 205, 221, 233, 253, 256, 290, 304, 324, 332, 370, 374, 414, 428, 446, 464, 508, 514, 553, 567...
[ "easy", "sign" ]
A246527
[ 1, 1, 3, 16, 125, 1296, 16807, 262864, 4829049, 102073600, 2441582891, 65201946624, 1922453391157, 62009850843136, 2171369477933775, 82007515430081540, 3322113623606686000, 143662773881554110000, 6.604529623711335e+21, 3.216089289546957e+23 ]
[ "nonn" ]
A372958
[ 5, 1, 5, 7, 9, 5, 0, 2, 3, 4, 3, 2, 8, 0, 1, 6, 2, 3, 0, 2, 1, 3, 2, 3, 3, 4, 0, 7, 3, 4, 7, 3, 6, 5, 9, 8, 0, 9, 5, 6, 8, 0, 1, 7, 5, 8, 5, 7, 3, 9, 7, 7, 1, 1, 5, 2, 7, 4, 2, 2, 9, 0, 7, 4...
[ "nonn", "cons" ]
A022612
[ 1, -17, 136, -697, 2669, -8517, 24361, -64549, 160140, -375564, 842078, -1818932, 3800537, -7709449, 15239497, -29440226, 55697542, -103382254, 188589925, -338602243, 599066162, -1045509435, 1801660255, -3068201310 ]
[ "sign" ]
A187523
[ 2, 354, 4200, 34776, 107990, 475370, 978568, 2790760, 5647886, 11787078, 17703910, 41527872, 57261832 ]
[ "nonn" ]
A284196
[ 10, 131, 1919, 71181, 1488503, 54333131, 1321614728, 45952259333, 1219757876905, 40859784312028, 1146325236883584, 37457479952593570, 1089802904379131100, 35049513938138370000, 1.0448794215699773e+21, 3.3275440972162413e+22 ]
[ "nonn" ]
A281858
[ 370, 336700, 333667000, 333366670000, 333336666700000, 333333666667000000, 333333366666670000000, 3.333333366666667e+23, 3.333333336666667e+26, 3.3333333336666664e+29, 3.333333333366667e+32, 3.333333333336667e+35 ]
[ "nonn", "easy" ]
A053417
[ 0, 2, 4, 10, 14, 24, 30, 48, 60, 76, 92, 110, 130, 154, 178, 208, 230, 264, 288, 330, 364, 406, 442, 482, 522, 564, 614, 664, 712, 766, 812, 874, 922, 990, 1050, 1112, 1176, 1240, 1312, 1382, 1452, 1530, 1598, 1684, 1750, 1840...
[ "easy", "nonn" ]
A327773
[ 0, 6, 3, 3, 2, 7, 8, 0, 4, 3, 8, 6, 8, 0, 5, 1, 1, 2, 4, 8, 0, 3, 1, 0, 7, 2, 6, 0, 0, 2, 8, 3, 9, 5, 8, 9, 9, 2, 8, 4, 9, 9, 9, 2, 7, 9, 7, 3, 4, 2, 2, 5, 7, 0, 0, 7, 7, 1, 1, 7, 0, 1, 8, 2...
[ "nonn", "cons" ]
A320626
[ 1, 1, 4, 26, 2074, 21660, 2804068, 33847970, 5345496688, 12201269878660, 165029257057602, 433037204976615550, 85637003420093450000, 1.2156034990859165e+21, 2.4887124493713493e+23, 7.538818741657232e+26, 2.3591610600123786e+30 ]
[ "nonn" ]
A239860
[ 4, 5, 44, 78, 255, 742, 1382, 5647, 14755, 33946, 120389, 305123, 717503, 2451925, 6276842, 15461619, 51283453, 130329061, 331984698, 1067700153, 2718467454, 7099921104, 22241389875, 56803646347, 151320850227, 463374925294 ]
[ "nonn" ]
A087012
[ 1, 3, 4, 5, 8, 10, 11, 12, 13, 15, 20, 22, 23, 24, 25, 26, 31, 34, 35, 37, 49, 50, 52, 53, 57, 58, 59, 62, 63, 69, 72, 73, 75, 79, 82, 83, 84, 85, 86, 91, 92, 93, 94, 95, 97, 99, 141, 147, 148, 149, 152, 153, 164...
[ "nonn" ]
A069265
[ 4, 8, 9, 16, 18, 25, 32, 36, 48, 49, 50, 64, 72, 81, 98, 100, 108, 121, 128, 144, 162, 169, 192, 196, 200, 225, 242, 256, 288, 289, 300, 324, 338, 361, 392, 400, 432, 441, 450, 484, 512, 529, 576, 578, 588, 625, 648, 676, ...
[ "easy", "nonn" ]
A016481
[ 3, 1, 32, 1, 1, 1, 18, 2, 97, 2, 1, 1, 1, 28, 2, 2, 1, 331, 6, 1, 1, 1, 7, 2, 1, 1, 1, 3, 2, 1, 15, 1, 1, 1, 2, 1, 2, 7, 2, 1, 2, 7, 9, 2, 15, 1, 1, 1, 1, 3, 1, 26, 6, 1, 1, 2, 2, 6, 25, 1, 1, 1...
[ "nonn", "cofr" ]
A252993
[ 202, 829, 829, 3548, 4315, 3548, 15395, 24001, 24001, 15395, 66914, 136697, 176608, 136697, 66914, 291448, 782043, 1350439, 1350439, 782043, 291448, 1269628, 4486592, 10388030, 14090659, 10388030, 4486592, 1269628, 5531792, 25761550 ]
[ "nonn", "tabl" ]
A361729
[ 1, 0, 6, 18, 108, 546, 3030, 16920, 96480, 557460, 3255426, 19186020, 113905386, 680583708, 4088506428, 24677473884, 149564145060, 909784736388, 5552109174084, 33981183515664, 208523253915306, 1282621025382840, 7906367632595328, 48832556909752050 ]
[ "nonn" ]
A240073
[ 1, 2, 3, 4, 7, 8, 10, 14, 16, 21, 22, 26, 32, 44, 50, 52, 63, 64, 76, 92, 98, 105, 110, 124, 128, 136, 152, 170, 182, 184, 212, 225, 230, 232, 248, 256, 290, 296, 310, 315, 328, 344, 370, 376, 405, 410, 424, 470, 472, ...
[ "nonn" ]
A278451
[ 0, 1, 3, 5, 7, 9, 11, 14, 17, 19, 22, 25, 28, 31, 34, 37, 40, 43, 46, 49, 52, 56, 59, 62, 66, 69, 73, 76, 80, 83, 87, 90, 94, 98, 101, 105, 109, 112, 116, 120, 123, 127, 131, 135, 139, 143, 146, 150, 154, 158, 162, ...
[ "nonn" ]
A072504
[ 1, 1, 1, 2, 1, 2, 1, 2, 3, 2, 1, 6, 1, 2, 3, 4, 1, 6, 1, 4, 3, 2, 1, 12, 5, 2, 3, 4, 1, 30, 1, 4, 3, 2, 5, 12, 1, 2, 3, 20, 1, 6, 1, 4, 15, 2, 1, 12, 7, 10, 3, 4, 1, 6, 5, 28, 3, 2, 1, 60, 1, 2,...
[ "nonn" ]
A109448
[ 1, 4, 9, 10, 21, 45, 48, 100, 102, 135, 144, 201, 228, 315, 320, 378, 399, 408, 736, 792, 803, 820, 832, 1000, 1035, 1044, 1056, 1088, 1101, 1128, 1215, 1233, 1308, 1431, 1720, 1908, 1926, 1962, 2001, 2028, 2052, 2119, 2208, 2210,...
[ "base", "nonn" ]
A014206
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[ "nonn", "easy", "nice" ]
A086615
[ 1, 2, 4, 8, 17, 38, 89, 216, 539, 1374, 3562, 9360, 24871, 66706, 180340, 490912, 1344379, 3701158, 10237540, 28436824, 79288843, 221836402, 622599625, 1752360040, 4945087837, 13988490338, 39658308814, 112666081616 ]
[ "nonn" ]
A346983
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[ "nonn", "easy" ]
A076492
[ 0, 0, 0, 1, 2, 1, 2, 3, 5, 4, 4, 3, 4, 4, 3, 5, 8, 7, 7, 6, 5, 7, 9, 7, 8, 9, 8, 8, 8, 9, 9, 9, 10, 10, 10, 10, 9, 9, 10, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, ...
[ "base", "nonn" ]
A180111
[ 1, 1, 3, 13, 63, 360, 2612, 20628, 184784, 1814400, 20168640, 241650132, 3135712971, 43589145600, 657203494738, 10507402233956, 178516252664449, 3201186852864000, 60997137390971896, 1219540642469803500, 25602927723893354000, 562000363888803840000 ]
[ "nonn" ]
A221013
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[ "nonn", "easy" ]
A201173
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[ "nonn", "easy" ]
A117733
[ 2, 3, 7, 10, 34, 54, 234, 402, 1938, 17490, 19590, 209670, 237390, 2933070, 43575630, 696759630, 697240110, 12541643310, 12550832490, 250832355690 ]
[ "nonn" ]
A235664
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[ "nonn" ]
A240408
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[ "nonn" ]
A199154
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[ "nonn", "cons" ]
A155787
[ 1, 0, 4, 9, 7, 8, 9, 9, 5, 1, 5, 7, 6, 2, 3, 4, 8, 3, 2, 5, 5, 2, 7, 8, 9, 8, 6, 0, 8, 6, 9, 7, 1, 9, 5, 3, 0, 4, 0, 3, 2, 2, 4, 8, 4, 4, 9, 6, 3, 1, 9, 4, 8, 2, 1, 4, 9, 3, 8, 0, 1, 9, 2, 0...
[ "nonn", "cons" ]
A047044
[ 1, 2, 5, 9, 23, 66, 404, 715, 3244, 12945, 49742, 238048, 996158, 3991995, 15684363, 64972818, 263344734, 1051693340, 4160663948, 16706844738, 66843638750, 266105167977, 1054877000715, 4199766244915, 16715117321502 ]
[ "nonn" ]
A238045
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[ "nonn" ]
A268617
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[ "nonn" ]
A189066
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[ "nonn" ]
A382533
[ 0, 2, 3, 4, 5, 168, 392, 5712 ]
[ "nonn", "more" ]
A021151
[ 0, 0, 6, 8, 0, 2, 7, 2, 1, 0, 8, 8, 4, 3, 5, 3, 7, 4, 1, 4, 9, 6, 5, 9, 8, 6, 3, 9, 4, 5, 5, 7, 8, 2, 3, 1, 2, 9, 2, 5, 1, 7, 0, 0, 6, 8, 0, 2, 7, 2, 1, 0, 8, 8, 4, 3, 5, 3, 7, 4, 1, 4, 9, 6...
[ "nonn", "cons", "easy" ]
A227093
[ 0, 0, 0, 1, 0, 1, 0, 2, 0, 3, 0, 5, 0, 8, 1, 3, 2, 1, 3, 4, 5, 5, 9, 0, 4, 6, 3, 6, 8, 3, 2, 0, 0, 3, 2, 3, 2, 6, 4, 9, 7, 6, 2, 6, 0, 2, 2, 8, 3, 0, 5, 8, 8, 9, 4, 8, 3, 7, 8, 6, 2, 4, 1, 0...
[ "nonn", "base", "cons", "easy" ]
A018753
[ 1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975 ]
[ "nonn", "fini", "full", "easy" ]
A253278
[ 1, 2, 3, 4, 8, 9, 11, 16, 17, 19, 27, 32, 33, 43, 51, 57, 59, 64, 67, 73, 81, 83, 89, 97, 99, 107, 113, 121, 128, 129, 131, 139, 146, 153, 163, 171, 177, 178, 179, 187, 193, 201, 209, 211, 227, 233, 241, 243, 249, 251,...
[ "nonn" ]
A236985
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[ "nonn" ]
A305469
[ 23, 25, 29, 35, 37, 41, 47, 49, 59, 67, 69, 75, 81, 87, 89, 97, 101, 103, 105, 111, 113, 115, 123, 125, 131, 135, 137, 139, 141, 145, 147, 155, 161, 167, 169, 175, 177, 183, 185, 193, 197, 199, 201, 207, 209, 217, 225, 227...
[ "nonn", "base" ]
A034899
[ 1, 2, 7, 20, 59, 162, 449, 1200, 3194, 8348, 21646, 55480, 141152, 356056, 892284, 2221208, 5497945, 13533858, 33151571, 80826748, 196219393, 474425518, 1142758067, 2742784304, 6561052331, 15645062126, 37194451937, 88174252924, 208463595471, 491585775018 ]
[ "nonn" ]
A121026
[ 6, 36, 60, 66, 96, 126, 156, 162, 168, 186, 216, 246, 264, 276, 306, 336, 360, 366, 396, 426, 456, 462, 468, 486, 516, 546, 564, 576, 600, 606, 612, 618, 624, 630, 636, 642, 648, 654, 660, 666, 672, 678, 684, 690, 696, 726, ...
[ "nonn", "base", "easy" ]
A081423
[ 1, 3, 12, 34, 75, 141, 238, 372, 549, 775, 1056, 1398, 1807, 2289, 2850, 3496, 4233, 5067, 6004, 7050, 8211, 9493, 10902, 12444, 14125, 15951, 17928, 20062, 22359, 24825, 27466, 30288, 33297, 36499, 39900, 43506, 47323, 51357, 55614, 6010...
[ "nonn", "easy" ]
A300371
[ 0, 6, 16, 39, 270, 1592, 12042, 75739, 490425, 3084820, 19634393, 129519588, 829432020, 5341866361, 34667291397, 223006749453, 1438573920539, 9290258941352, 59927615962595, 386783857393798, 2495707675837699 ]
[ "nonn" ]
A182345
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[ "nonn" ]
A009702
[ 1, 1, 57, 1657, 136977, 14004945, 2219125001, 457176874377, 123849671844513, 41945147421378340, 17490738249607543000, 8.778749876346905e+21, 5.2269715070616e+24, 3.64073747696698e+27 ]
[ "nonn" ]
A381629
[ 1, 1, 2, 1, 1, 2, 2, 4, 4, 1, 1, 2, 1, 1, 2, 2, 4, 4, 2, 4, 4, 5, 5, 8, 5, 5, 9, 9, 4, 2, 5, 11, 2, 2, 4, 1, 1, 5, 1, 1, 10, 2, 2, 4, 1, 1, 4, 4, 10, 10, 4, 10, 10, 12, 2, 4, 1, 2, 5, 4, 5, 10, ...
[ "nonn" ]
A280231
[ 8, 24, 52, 288, 1102, 4260, 16282, 59648, 220330, 806580, 2928596, 10606308, 38210998, 137282336, 491839132, 1757295568, 6265155736, 22290508020, 79158223310, 280632840576, 993329469088, 3510893492340, 12392392661846 ]
[ "nonn" ]