id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A156573
[ 529, 13225, 444889, 15108769, 513249025, 17435353849, 592288777609, 20120383080625, 683500735959409, 23218904639535050, 788759257008228000, 26794595833640215000, 910227499086759100000, 3.0920940373116166e+22 ]
[ "nonn", "easy" ]
A238535
[ 0, 2, 3, 4, 5, 9, 7, 12, 9, 15, 11, 22, 13, 21, 20, 24, 17, 33, 19, 35, 28, 33, 23, 50, 25, 39, 36, 49, 29, 61, 31, 56, 44, 51, 42, 75, 37, 57, 52, 78, 41, 84, 43, 77, 69, 69, 47, 108, 49, 85, 68, 91, 53, 108, ...
[ "nonn" ]
A322873
[ 1, 1, 1, 2, 1, 2, 1, 2, 2, 3, 1, 3, 1, 4, 3, 4, 1, 4, 1, 5, 2, 5, 1, 6, 2, 6, 2, 3, 1, 7, 1, 1, 2, 7, 2, 4, 1, 8, 3, 2, 1, 5, 1, 3, 3, 9, 1, 3, 2, 8, 4, 4, 1, 6, 2, 5, 3, 10, 1, 4, 1, 11, 1, ...
[ "nonn" ]
A161816
[ 1, 2, 4, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072 ]
[ "frac", "nonn" ]
A094999
[ 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 8, 8, 9, 10, 11, 12, 13, 14, 16, 17, 19, 21, 22, 25, 27, 29, 32, 35, 38, 42, 45, 50, 54, 59, 65, 71, 77, 84, 92, 100, 109, 119, 130,...
[ "nonn", "easy" ]
A171862
[ 1, 3, 5, 20, 17, 12, 10, 66, 47, 24, 148, 44, 173, 121, 30, 35, 138, 41, 63, 89, 56, 105, 324, 101, 215, 110, 257, 142, 320, 225, 471, 72, 59, 81, 183, 539, 134, 92, 263, 168, 129, 548, 52, 199, 179, 228, 98, 297, 621, ...
[ "nonn" ]
A058013
[ 2, 2, 2, 3, 2, 2, 7, 2, 2, 3, 2, 17, 3, 2, 2, 5, 3, 2, 5, 2, 2, 229, 2, 3, 3, 2, 3, 3, 2, 2, 5, 3, 2, 3, 2, 2, 3, 3, 2, 7, 2, 3, 37, 2, 3, 5, 58543, 2, 3, 2, 2, 3, 2, 2, 3, 2, 5, 3, 4663, 54517, 1...
[ "nonn", "nice" ]
A243003
[ 2, 4, 4, 5, 11, 13, 16, 17, 16, 29, 57, 78 ]
[ "nonn", "hard", "more" ]
A345467
[ 1, 37, 12345679, 4.1152263374485596e+24, 1.3717421124828533e+78 ]
[ "base", "nonn" ]
A298720
[ 129, 130, 131, 132, 133, 134, 135, 136, 137, 145, 146, 147, 148, 149, 150, 151, 152, 153, 162, 163, 164, 165, 166, 167, 168, 169 ]
[ "base", "fini", "full", "nonn", "word" ]
A061108
[ 2, 2, 6, 4, 8, 6, 12, 20, 8, 24, 24, 12, 24, 42, 40, 16, 48, 44, 24, 60, 54, 64, 72, 60, 32, 52, 36, 72, 110, 84, 108, 44, 120, 40, 120, 132, 82, 156, 120, 48, 160, 64, 96, 60, 180, 192, 120, 72, 120, 184, 64, 216,...
[ "nonn" ]
A184365
[ 1, 0, 1, 0, 0, -4, 0, -6, 0, 0, 0, 0, 11, 0, 0, 14, 0, 0, 0, 0, 0, 0, -21, 0, 0, 0, -25, 0, 0, 0, 0, 0, 0, 0, 0, 34, 0, 0, 0, 0, 39, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -50, 0, 0, 0, 0, 0, -56, 0, 0, 0,...
[ "sign" ]
A360940
[ 1, 2, 3, 8, 10, 12, 18, 21, 24, 28, 36, 72, 78, 96, 108, 126, 128, 168, 224, 243, 288, 294, 384, 392, 756, 864, 930, 972, 1000, 1152, 1323, 1350, 1944, 2310, 2430, 2530, 2808, 3087, 3456, 4116, 6144, 6912, 7776, 10206, 10584, ...
[ "nonn" ]
A241708
[ 0, 0, 0, 0, 1, 8, 82, 1027, 19320, 598913 ]
[ "nonn", "hard", "more" ]
A283320
[ 4, 9, 10, 12, 18, 24, 42, 60, 84, 90, 120, 150, 180, 330, 390, 420, 630, 840, 1050, 1260, 1470, 1680, 1890, 2100, 2730, 3570, 3990, 4620, 5460, 6930, 8190, 9240, 10920, 11550, 13650, 13860, 16170, 18480, 20790, 23100, 25410, 27720, ...
[ "nonn" ]
A108253
[ 277, 331, 447, 525, 577, 627, 643, 811, 897, 921, 937, 955, 1017, 1095, 1131, 1137, 1213, 1347, 1477, 1533, 1551, 1621, 1813, 1857, 1911, 2071, 2083, 2157, 2167, 2185, 2193, 2205, 2257, 2277, 2391, 2431, 2443, 2457, 2475, 2535, 2655, ...
[ "easy", "nonn" ]
A060597
[ 1, 2, 16, 1646, 16930560, 665354510109750 ]
[ "nonn", "nice" ]
A293134
[ 1, 1, -1, 1, 0, 3, 1, 0, -2, -13, 1, 0, 0, 6, 73, 1, 0, 0, -6, -12, -501, 1, 0, 0, 0, 24, 0, 4051, 1, 0, 0, 0, -24, -120, 240, -37633, 1, 0, 0, 0, 0, 120, 1080, -2520, 394353, 1, 0, 0, 0, 0, -120, -720, -10080, ...
[ "sign", "tabl" ]
A070940
[ 1, 1, 2, 1, 3, 2, 3, 1, 4, 3, 4, 2, 4, 3, 4, 1, 5, 4, 5, 3, 5, 4, 5, 2, 5, 4, 5, 3, 5, 4, 5, 1, 6, 5, 6, 4, 6, 5, 6, 3, 6, 5, 6, 4, 6, 5, 6, 2, 6, 5, 6, 4, 6, 5, 6, 3, 6, 5, 6, 4, 6, 5, 6, 1...
[ "nonn", "nice", "easy", "tabf" ]
A015619
[ 1, 1, 0, 0, 0, -1, -1, -1, -1, 0, 1, 1, 1, 1, 1, 0, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, -1, -1, -1, -1, -1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 0, 1, 1, 1, 1, ...
[ "sign" ]
A372409
[ 1, -1, 1, -3, 3, -8, -5, -5, -24, 7, 0, 0, 9, 9, -81312, -1341867, 11, -19685120, -13, -13, 0, -15, 0, -180287762432, 17, -1407939911477, 10526233598464, 19, 19, 0, 6040299856799, -21, 29830847001120770, 23, -23, 0, 115407361849089840, -25, ...
[ "sign" ]
A005075
[ 0, 4, 0, 4, 25, 4, 0, 4, 0, 29, 121, 4, 0, 4, 25, 4, 289, 4, 0, 29, 0, 125, 529, 4, 25, 4, 0, 4, 841, 29, 0, 4, 121, 293, 25, 4, 0, 4, 0, 29, 1681, 4, 0, 125, 25, 533, 2209, 4, 0, 29, 289, 4, 2809, 4, 146, ...
[ "nonn" ]
A197091
[ 1, 7, 74, 3477, 457357, 183439730, 227951140324, 864930843239459, 10066466828015680000, 3.5907432063516135e+23 ]
[ "nonn" ]
A184105
[ 1, 2, 3, 4, 5, 7, 8, 10, 12, 13, 15, 17, 19, 21, 23, 26, 28, 30, 33, 35, 38, 41, 44, 47, 49, 53, 56, 59, 62, 65, 69, 72, 76, 80, 83, 87, 91, 95, 99, 103, 108, 112, 116, 121, 125, 130, 135, 140, 145, 149, 155, 160, ...
[ "nonn", "easy" ]
A259984
[ 1, 2, 9, 12, 70, 89, 97, 102, 112, 182, 610, 620, 690, 809, 819, 889, 907, 917, 987, 1002, 1112, 1692, 1882, 1962, 6010, 6120, 6700, 6890, 6970, 8009, 8119, 8699, 8889, 8969, 9007, 9117, 9697, 9887, 9967, 10002, 10102, 10802, 11012,...
[ "nonn", "base" ]
A370444
[ 1, 4, 40, 460, 5940, 82060, 1188140, 17792060, 273299640, 4282438360, 68184114040, 1099949668960, 17940069922740, 295334808497460, 4900888478007740, 81893191113037760, 1376770060020516000, 23270650287508520000, 395214289798485050000, 6.740892510015482e+21, 1.1541934170309759e...
[ "nonn" ]
A236323
[ 16, 32, 60, 120, 252, 496, 972, 1960, 3980, 7872, 15676, 31512, 63260, 125840, 251692, 504456, 1009452, 2014560, 4031900, 8069112, 16136636, 32249392, 64530060, 129075560, 258121932, 516130816, 1032513532, 2064979160, 4129750620 ]
[ "nonn" ]
A267894
[ 1, 2, 4, 8, 15, 16, 21, 27, 30, 32, 33, 35, 39, 42, 45, 51, 54, 55, 57, 60, 63, 64, 65, 66, 69, 70, 75, 77, 78, 84, 85, 87, 90, 91, 93, 95, 99, 102, 105, 108, 110, 111, 114, 115, 117, 119, 120, 123, 125, 126, 128, ...
[ "nonn" ]
A061130
[ 1, 1, 1, 3, 12, 36, 126, 666, 6588, 44892, 237996, 2204676, 26370576, 219140208, 1720782792, 19941776856, 234038005776, 2243409386256, 23225205107088, 295070141019312, 4303459657780416, 55200265166477380, 660776587455193100 ]
[ "easy", "nonn" ]
A081601
[ 0, 3, 9, 12, 27, 30, 36, 39, 81, 84, 90, 93, 108, 111, 117, 120, 243, 246, 252, 255, 270, 273, 279, 282, 324, 327, 333, 336, 351, 354, 360, 363, 729, 732, 738, 741, 756, 759, 765, 768, 810, 813, 819, 822, 837, 840, 846, 84...
[ "easy", "nonn" ]
A212103
[ 0, 1, 2, 3, 10, 11, 30, 31, 38, 39, 52, 53, 84, 85, 86, 117, 124, 125, 144, 145, 200, 225, 226, 227, 282, 283, 284, 285, 334, 335, 420, 421, 428, 435, 436, 491, 546, 547, 548, 555, 634, 635, 726, 727, 758, 837, 838, 839, ...
[ "nonn" ]
A192353
[ 1, 0, 5, 1, 42, 43, 429, 820, 4861, 12597, 58598, 177859, 732825, 2417416, 9358677, 32256553, 120902914, 426440955, 1571649221, 5610955132, 20497829133, 73645557469, 267803779710, 965384509651, 3502058316337, 12646311635088, 45818284122149 ]
[ "nonn" ]
A361686
[ 22, 22, 10, 46, 58, 46, 78, 82, 58, 46, 102, 22, 106, 82, 46, 138, 106, 82, 166, 172, 178, 190, 106, 226, 82, 166, 238, 172, 178, 22, 106, 262, 190, 282, 22, 106, 310, 316, 226, 82, 166, 238, 172, 346, 46, 178, 22, 358, ...
[ "nonn" ]
A281465
[ 8, 37, 39, 96, 207, 405, 897, 1975, 4154, 8884, 19297, 41447, 88670, 190913, 411053, 882410, 1895974, 4078246, 8765802, 18835918, 40491783, 87045948, 187087510, 402129300, 864407625, 1858020929, 3993687963, 8584396666, 18452096569 ]
[ "nonn" ]
A228220
[ 31, 199, 625, 1429, 2731, 4651, 7309, 10825, 15319, 20911, 27721, 35869, 45475, 56659, 69541, 84241, 100879, 119575, 140449, 163621, 189211, 217339, 248125, 281689, 318151, 357631, 400249, 446125, 495379, 548131, 604501, 664609, 728575 ]
[ "nonn" ]
A145224
[ 1, 0, 1, 0, 0, 1, 2, 0, 0, 1, 3, 8, 0, 0, 1, 24, 15, 20, 0, 0, 1, 130, 144, 45, 40, 0, 0, 1, 930, 910, 504, 105, 70, 0, 0, 1, 7413, 7440, 3640, 1344, 210, 112, 0, 0, 1, 66752, 66717, 33480, 10920, 3024, 378, 168, ...
[ "nonn", "tabl" ]
A019409
[ 2, 5, 7, 37, 47, 53, 61, 67, 73, 97, 103, 131, 149, 157, 173, 191, 199, 229, 233, 251, 257, 263, 281, 283, 337, 353, 359, 401, 409, 421, 433, 439, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 557, 563, 593, 599, 631, ...
[ "nonn" ]
A063462
[ 0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 0, 11, 24, 39, 56, 75, 96, 119, 144, 171, 0, 21, 44, 69, 96, 125, 156, 189, 224, 261, 0, 31, 64, 99, 136, 175, 216, 259, 304, 351, 0, 41, 84, 129, 176, 225, 276, 329, 384, 441, 0, ...
[ "base", "easy", "nonn" ]
A208243
[ 0, 0, 1, 2, 3, 2, 2, 2, 2, 3, 4, 4, 3, 2, 3, 3, 5, 6, 3, 3, 4, 4, 5, 7, 4, 3, 4, 2, 5, 7, 4, 4, 5, 4, 5, 7, 4, 5, 8, 2, 5, 7, 5, 5, 6, 6, 4, 7, 4, 5, 9, 3, 5, 9, 4, 6, 6, 5, 5, 7, 3, 3, 7, 3...
[ "nonn" ]
A173374
[ 426, 9807, 84332, 91524247 ]
[ "nonn", "more", "hard" ]
A240575
[ 0, 0, 0, 1, 1, 2, 2, 3, 4, 5, 8, 10, 14, 16, 25, 28, 40, 47, 65, 77, 101, 122, 158, 193, 239, 295, 363, 449, 539, 670, 800, 989, 1169, 1439, 1701, 2083, 2442, 2975, 3493, 4224, 4941, 5944, 6955, 8313, 9706, 11538, 13475, 1...
[ "nonn", "easy" ]
A134827
[ 1, 2, 8, 18, 78, 206, 872, 2226, 10820, 26558, 129248, 335886, 1630174, 3990978, 21778450, 48749804, 274937594, 650637382, 3598954596, 7610277626, 49741540498, 93757794966, 639655810986, 1233712869392, 8530089042832 ]
[ "nonn", "easy" ]
A170339
[ 1, 42, 1722, 70602, 2894682, 118681962, 4865960442, 199504378122, 8179679503002, 335366859623082, 13750041244546362, 563751691026400830, 23113819332082434000, 947666592615379800000, 3.885433029723057e+22 ]
[ "nonn" ]
A196875
[ 1, 1, 1, 1, 4, 8, 16, 32, 64, 125, 243, 471, 911, 1759, 3394, 6546, 12622, 24334, 46910, 90427, 174309, 335997, 647661, 1248413, 2406400, 4638492, 8940988, 17234316, 33220220, 64034041, 123429591, 237918195, 458602075, 883983931, 1703933822, 3284...
[ "nonn", "easy" ]
A322235
[ 1, 1, 1, 1, 2, 3, 5, 3, 2, 6, 11, 24, 23, 24, 11, 6, 24, 50, 131, 160, 215, 160, 131, 50, 24, 120, 274, 825, 1181, 1890, 1815, 1890, 1181, 825, 274, 120, 720, 1764, 5944, 9555, 17471, 19866, 24495, 19866, 17471, 9555, 5944, ...
[ "nonn", "tabf" ]
A063769
[ 25, 95, 119, 143, 417, 445, 565, 608, 650, 652, 675, 685, 783, 790, 909, 913 ]
[ "hard", "nice", "nonn" ]
A243525
[ 4, 1, 5, 9, 2, 7, 1, 0, 8, 9, 8, 3, 2, 4, 8, 1, 1, 9, 1, 8, 1, 4, 0, 9, 0, 5, 8, 6, 0, 1, 8, 9, 3, 4, 2, 4, 0, 8, 2, 6, 3, 7, 7, 9, 0, 4, 2, 0, 3, 4, 6, 2, 9, 9, 4, 6, 2, 3, 7, 0, 2, 8, 5, 5...
[ "nonn", "cons" ]
A201939
[ 1, 1, 5, 0, 5, 8, 4, 9, 6, 7, 4, 1, 8, 6, 6, 3, 9, 4, 9, 5, 3, 4, 9, 3, 3, 7, 3, 3, 6, 1, 3, 7, 8, 8, 1, 9, 5, 7, 6, 6, 8, 3, 7, 4, 9, 4, 8, 4, 4, 2, 4, 2, 3, 4, 1, 1, 8, 3, 3, 9, 2, 5, 1, 8...
[ "nonn", "cons" ]
A038307
[ 1, 10, 5, 100, 100, 25, 1000, 1500, 750, 125, 10000, 20000, 15000, 5000, 625, 100000, 250000, 250000, 125000, 31250, 3125, 1000000, 3000000, 3750000, 2500000, 937500, 187500, 15625, 10000000, 35000000, 52500000, 43750000 ]
[ "nonn", "tabl", "easy" ]
A388810
[ 1, 0, 7, 2, 2, 9, 3, 3, 9, 8, 2, 5, 5, 1, 5, 2, 8, 7, 1, 9, 2, 1, 8, 6, 7, 6, 1, 3, 4, 2, 1, 3, 0, 6, 1, 9, 4, 7, 4, 9, 3, 3, 7, 5, 6, 5, 6, 7, 3, 7, 2, 2, 0, 7, 5, 9, 6, 2, 7, 1, 6, 9, 0, 3...
[ "nonn", "cons" ]
A321747
[ 1, 1, -1, 1, 1, -2, -1, 1, 1, 2, 1, -3, -1, -2, -2, 1, 1, 3, -1, 3, 2, 2, 1, -4, 1, -2, -1, -3, -1, -6, 1, 1, -2, 2, -2, 6, -1, -2, 2, 4, 1, 6, -1, 3, 3, 2, 1, -5, 1, 3, -2, -3, -1, -4, 2, -4, 2, -2, ...
[ "sign" ]
A025204
[ 1, 12, 54, 167, 422, 929, 1848, 3398, 5867, 9627, 15136, 22960, 33775, 48381, 67713, 92851, 125032, 165656, 216305, 278744, 354938, 447060, 557500, 688879, 844054, 1026131 ]
[ "nonn", "more" ]
A258638
[ 33, 316, 2115, 8432, 40789, 105719, 290231, 615072, 1376125, 2357746, 4980833, 7842482, 14253622, 23019880, 37955879, 53553640, 88436758, 120061819, 183877123, 258843359, 370889319, 477163075, 687457306, 913900212, 1241075611 ]
[ "nonn" ]
A091476
[ 2, 4, 6, 7, 4, 0, 1, 1, 0, 0, 2, 7, 2, 3, 3, 9, 6, 5, 4, 7, 0, 8, 6, 2, 2, 7, 4, 9, 9, 6, 9, 0, 3, 7, 7, 8, 3, 8, 2, 8, 4, 2, 4, 8, 5, 1, 8, 1, 0, 1, 9, 7, 6, 5, 6, 6, 0, 3, 3, 3, 7, 3, 4, 4...
[ "nonn", "cons", "changed" ]
A089059
[ 21, 42, 63, 84, 85, 105, 126, 147, 168, 170, 184, 189, 210, 217, 231, 252, 255, 273, 294, 315, 336, 340, 357, 368, 378, 399, 420, 425, 434, 441, 441, 462, 483 ]
[ "nonn" ]
A205852
[ 5, 6, 6, 7, 9, 10, 11, 11, 12, 12, 12, 13, 14, 14, 15, 15, 16, 16, 16, 17, 17, 17, 18, 18, 19, 19, 19, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 24, 25, 25, 25, 25, 25, 26, 26, 26,...
[ "nonn" ]
A275172
[ 2, 5, 16, 25, 33, 40, 78, 89, 158, 172, 221, 237, 376, 395, 415, 523, 570, 749, 777, 790, 876, 923, 1016, 1114, 1182, 1303, 1341, 1473, 1512, 1754, 1839, 1970, 2105, 2267, 2315, 2488, 2538, 2957, 3012, 3204, 3262, 3467, 3527, 3646...
[ "nonn" ]
A355305
[ 1105, 2465, 10585, 62745, 278545, 449065, 825265, 1050985, 2531845, 3224065, 3664585, 5632705, 6054985, 9582145, 11119105, 12945745, 13187665, 13992265, 15403285, 21584305, 22665505, 28787185, 31692805, 36121345, 37354465, 39353665, 40280065, 41298985, 4700678...
[ "nonn", "base" ]
A079204
[ 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 146, 12992 ]
[ "nonn", "tabf" ]
A158725
[ 49, 91, 119, 133, 161, 169, 203, 217, 221, 247, 259, 287, 289, 299, 301, 323, 329, 343, 361, 371, 377, 391, 403, 413, 427, 437, 469, 481, 493, 497, 511, 527, 529, 533, 551, 553, 559, 581, 589, 611, 623, 629, 637, 667, 679, 689...
[ "nonn" ]
A248450
[ 62, 1272, 11436, 59480, 226410, 694632, 1824272, 4257336, 9061830, 17909120, 33303852, 58859112, 99630266, 162505920, 256670520, 394127072, 590308422, 864758736, 1241905340, 1751918880, 2431676802, 3325811912, 4487885496 ]
[ "nonn" ]
A133746
[ 5, 2, 3, 8, 2, 2, 5, 7, 1, 3, 8, 9, 8, 6, 4, 4, 0, 6, 4, 5, 0, 9, 5, 8, 2, 9, 4, 3, 8, 3, 2, 5, 5, 6, 6, 7, 6, 1, 5, 2, 4, 8, 0, 3, 0, 0, 6, 7, 0, 0, 7, 3, 9, 0, 8, 6, 5, 3, 0, 2, 5, 0, 5, 6...
[ "nonn", "cons" ]
A351370
[ 0, 8, 243, 8, 48828125, 251, 232630513987207, 8, 243, 48828133, 1.9194342495775046e+32, 251, 4.695452425098909e+45, 232630513987215, 48828368, 8, 3.9489929764765464e+72 ]
[ "nonn" ]
A234784
[ 797988, 241927524, 75353928188, 23692759265012, 7476894104333052, 2363085244017636400, 747324517604795100000, 2.3640299342757113e+23, 7.479018236548513e+25, 2.3662267614587187e+28 ]
[ "nonn" ]
A032636
[ 0, 0, 2, 9, 23, 45, 79, 126, 188, 268, 367, 489, 635, 808, 1009, 1241, 1506, 1807, 2145, 2523, 2943, 3406, 3917, 4475, 5085, 5748, 6465, 7240, 8075, 8972, 9932, 10959, 12054, 13220, 14459, 15772, 17163, 18634, 20186, 21822, 23544, 253...
[ "nonn", "easy" ]
A041524
[ 16, 17, 50, 117, 167, 451, 1069, 1520, 49709, 51229, 152167, 355563, 507730, 1371023, 3249776, 4620799, 151115344, 155736143, 462587630, 1080911403, 1543499033, 4167909469, 9879317971, 14047227440, 459390596051, 473437823491, 1406266243033, 3285970309557 ]
[ "nonn", "cofr", "frac", "easy" ]
A373891
[ 0, 0, 1, 0, 2, 1, 3, 2, 0, 4, 1, 3, 5, 4, 2, 3, 6, 4, 5, 7, 5, 6, 6, 0, 7, 8, 8, 9, 9, 0, 10, 7, 10, 0, 11, 8, 9, 11, 10, 11, 12, 1, 13, 12, 14, 0, 1, 13, 15, 14, 12, 16, 2, 13, 14, 15, 17, 16, 15, ...
[ "nonn" ]
A226550
[ 0, 7, 180, 1625, 16936, 157279, 1426734, 12582472, 108971358, 929801662, 7842704798, 65526395993, 543197940936, 4473218574611, 36628689696182, 298465716569236, 2421637058537566, 19574314969125484, 157692516088571200, 1266593481935599000, 10146033357194980000 ]
[ "nonn", "easy" ]
A336823
[ 1, 1, 1, 2, 2, 1, 2, 6, 6, 3, 6, 2, 1, 3, 1, 4, 4, 2, 1, 3, 6, 2, 6, 24, 12, 4, 12, 3, 1, 4, 1, 5, 5, 10, 5, 15, 30, 10, 30, 120, 60, 20, 60, 15, 5, 20, 5, 1, 2, 6, 2, 8, 24, 6, 24, 120, 40, 10, 40, ...
[ "base", "nonn", "look" ]
A379646
[ 1, 2, 3, 8, 12, 24, 3, 8, 12, 24, 4, 6, 24, 5, 20, 60, 120, 6, 24, 7, 16, 24, 8, 12, 24, 9, 24, 10, 60, 120, 11, 10, 60, 120, 12, 24, 13, 28, 48, 24, 14, 48, 24, 15, 40, 60, 120, 16, 24, 17, 36, 24, 18, 24, 1...
[ "nonn", "tabf" ]
A170051
[ 1, 42, 1722, 70602, 2894682, 118681962, 4865960442, 199504378122, 8179679503002, 335366859623082, 13750041244546362, 563751691026400830, 23113819332082434000, 947666592615379800000, 3.885433029723057e+22 ]
[ "nonn" ]
A145280
[ 9, 9, 1, 7, 8, 7, 6, 3, 4, 3, 3, 3, 4, 2, 2, 8, 1, 2, 1, 4, 2, 2, 1, 3, 1, 0, 0, 0, 0, 7, 5, 3, 3, 2, 8, 6, 2, 6, 1, 2, 4, 5, 1, 1, 1, 1, 5, 5, 2, 4, 5, 9, 9, 4, 7, 7, 9, 5, 2, 6, 2, 8, 0, 1...
[ "easy", "nonn", "base" ]
A014435
[ 1, 6, 6, 42, 114, 654, 2526, 13506, 61242, 321558, 1579830, 8311578, 42655938, 226373406, 1192341390, 6391471794, 34239385482, 185275416102, 1004459653734, 5480384744202, 29980061984274, 164732303389614, 907579024283454 ]
[ "nonn" ]
A274226
[ 14, 21, 26, 29, 30, 35, 42, 45, 46, 49, 50, 53, 56, 61, 65, 70, 78, 84, 91, 93, 104, 106, 109, 115, 116, 120, 133, 140, 142, 145, 157, 168, 169, 180, 184, 190, 196, 200, 202, 205, 212, 224, 235, 244, 253, 260, 265 ]
[ "nonn" ]
A324678
[ 0, 0, 0, 0, 0, 0, 0, -3165, 0, 0, 0, 0, -140, -139, 0, 0, 0, -3072845, 0, 0, -383171, 0, 0, 0, 0, -4869724, 0, 0, 0, -217, -31071367, -1854085, -1854084, -1854083, -1854082, 0, 0, -24, -696919, -696918, -26, -1, 0, 0, -1920, 0...
[ "sign" ]
A228065
[ 4, 18, 123, 941, 7600, 63696, 548039, 4808260, 42826261, 386039540, 3513837172, 32243075171, 297881471562, 2768030763779, 25850862018051, 242481085729315, 2283239371770773, 21572797793887020, 204448571890127330, 1942896366409284600 ]
[ "nonn" ]
A314260
[ 1, 5, 11, 18, 23, 27, 32, 41, 45, 48, 57, 63, 68, 71, 77, 86, 89, 93, 102, 109, 111, 116, 123, 129, 134, 139, 147, 152, 157, 161, 166, 175, 179, 184, 191, 197, 202, 205, 211, 220, 225, 227, 236, 243, 245, 250, 257, 265, ...
[ "nonn" ]
A026475
[ 1, 3, 4, 5, 6, 7, 19, 20, 21, 22, 36, 37, 38, 39, 53, 54, 55, 69, 70, 71, 72, 86, 87, 88, 102, 103, 104, 105, 119, 120, 121, 135, 136, 137, 138, 152, 153, 154, 168, 169, 170, 171, 185, 186, 187, 201, 202, 203, 204, 218...
[ "nonn", "easy" ]
A094338
[ 0, -5, 5, 20, 17, 39, 129, 140, 127, 305, 431, 448, 603, 777, 1037, 1540, 1313, 1951, 2373, 2450, 2861, 3407, 3975, 4656, 5329, 6073, 6951, 7092, 7983, 8091, 11063, 11290, 14695, 12749, 14143, 14276, 18495, 20201, 20571, 25612, 21065, ...
[ "sign" ]
A131756
[ 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3, 2, -1, 3...
[ "sign", "easy" ]
A005290
[ 1, -1, 0, 0, 1, 0, 2, 0, 3, 1, 5, 2, 10, 5, 16, 13, 28, 24, 50, 46, 84, 87, 141, 153, 241, 266, 396, 459, 653, 766, 1070, 1267, 1725, 2075, 2762, 3342, 4397, 5330, 6918, 8432, 10814, 13188, 16784, 20468, 25836, 31529, 39505,...
[ "sign", "easy" ]
A333705
[ 1, 2, 8, 21, 100, 204, 401, 3062, 5974, 11402, 22597, 22598, 43553, 85519, 166243, 1218380, 8854646, 248592083, 248592084, 485966511 ]
[ "nonn", "more" ]
A059663
[ 0, 2, 1, 3, 4, 1, 3, 2, 1, 13, 6, 11, 13, 1, 11, 4, 2, 3, 10, 6, 3, 5, 1, 3, 18, 2, 3, 11, 6, 10, 14, 3, 4, 1, 2, 6, 5, 2, 8, 4, 10, 14, 6, 5, 3, 9, 1, 3, 2, 6, 14, 2, 5, 10, 2, 18, 9, 13, 10, 1, ...
[ "nonn" ]
A035982
[ 1, 2, 3, 4, 6, 9, 12, 17, 23, 31, 41, 55, 71, 93, 120, 154, 195, 249, 312, 393, 490, 610, 754, 933, 1144, 1404, 1713, 2087, 2531, 3068, 3699, 4458, 5352, 6416, 7667, 9153, 10889, 12943, 15342, 18162, 21448, 25302, 29775, 35003, ...
[ "nonn", "easy" ]
A030240
[ 1, 7, 42, 245, 1421, 8232, 47677, 276115, 1599066, 9260657, 53631137, 310593360, 1798735561, 10416995407, 60327818922, 349375764605, 2023335619781, 11717718986232, 67860683565157, 393000752052475, 2275980479411226, 13180858091511256, 76334143284700220 ]
[ "nonn", "easy" ]
A312266
[ 1, 4, 8, 14, 16, 22, 24, 28, 32, 38, 44, 46, 52, 54, 58, 58, 68, 70, 80, 78, 88, 84, 92, 90, 104, 102, 116, 110, 122, 114, 128, 122, 140, 134, 152, 140, 156, 146, 164, 154, 176, 166, 186, 170, 192, 178, 200, 186, 212, ...
[ "nonn" ]
A348491
[ 3, 97, 303, 307, 313, 953, 957, 963, 967, 973, 977, 983, 987, 993, 3003, 3007, 3013, 3017, 3023, 3027, 3033, 3037, 3043, 3047, 3053, 3057, 3063, 3067, 3073, 3077, 3083, 3087, 3093, 3097, 3103, 3107, 3113, 3117, 3123, 3127, 3133, 3137,...
[ "nonn", "base", "easy" ]
A087208
[ 1, 1, 3, 7, 37, 141, 1111, 5923, 62217, 426457, 5599531, 46910271, 739138093, 7318002277, 134523132927, 1536780478171, 32285551902481, 418004290062513, 9879378882159188, 142957467201379440, 3754163975220491300, 60042136224579370000, 1.7344237565518668e+21 ]
[ "nonn", "easy" ]
A218125
[ 1, 8, 56, 504, 4032, 32760, 261576, 2097144, 16773120, 134217216, 1073709000, 8589934584, 68719210560, 549755813880, 4398044413896, 35184372055560, 281474959933440, 2251799813685240, 18014398375002624, 144115188075855870, 1152921503533101000 ]
[ "nonn" ]
A047445
[ 1, 3, 5, 6, 9, 11, 13, 14, 17, 19, 21, 22, 25, 27, 29, 30, 33, 35, 37, 38, 41, 43, 45, 46, 49, 51, 53, 54, 57, 59, 61, 62, 65, 67, 69, 70, 73, 75, 77, 78, 81, 83, 85, 86, 89, 91, 93, 94, 97, 99, 101, 102, 105, ...
[ "nonn", "easy" ]
A193273
[ 1, 2, 42, 12806, 71531470, 4359452409293, 1840118598465187300, 4.839010680027431e+24, 7.825688067778972e+31 ]
[ "nonn" ]
A377368
[ 1, 2, 2, 5, 6, 10, 17, 26, 42, 69, 110, 178, 289, 466, 754, 1221, 1974, 3194, 5169, 8362, 13530, 21893, 35422, 57314, 92737, 150050, 242786, 392837, 635622, 1028458, 1664081, 2692538, 4356618, 7049157, 11405774, 18454930, 29860705, 48315634, ...
[ "nonn", "easy" ]
A138837
[ 2, 5, 11, 13, 17, 19, 23, 29, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241,...
[ "easy", "nonn" ]
A057249
[ 1, 2, 6, 7, 49, 78, 91, 133, 343, 539, 1014, 1309, 1578, 2401, 3367, 4459, 10231, 12103, 12246, 12691, 13182, 16807, 45619, 97193, 117649, 120883, 149989, 159198, 171366, 199283, 218491, 347263, 675703, 823543, 1100687, 1294139, 1327753, 1336...
[ "nonn" ]
A071796
[ 1, 1, 1, 1, 1, 2, 2, 6, 2, 4, 12, 20, 20, 60, 4, 84, 420, 840, 840, 504, 8, 120, 2520, 3080, 3080, 3080, 3080, 17160, 51480, 3432, 3432, 360360, 10920, 624, 48048, 4084080, 1361360, 12252240, 314160, 17907120, 232792560, 33256080, 3...
[ "nonn", "easy", "frac" ]
A055712
[ 1, 84, 156, 204, 364, 476, 514, 1092, 1428, 2316, 2652, 2892, 6069, 6188, 6748, 12138, 12532, 16212, 16388, 18564, 20244, 24276, 30108, 37596, 39372, 49164, 63291, 78897, 87724, 99202, 114716, 126582, 147679, 157794, 167331 ]
[ "nonn" ]
A326488
[ 1, 2, 160, 285, 2340, 2614, 8903, 81231, 171710, 182712, 434887, 2651907, 56517068, 143714354, 922484770, 5162883263, 39421525873 ]
[ "nonn", "more" ]
A292716
[ 1, 1, 6, 54, 672, 10625, 203256, 4554697, 116842496, 3373056027, 108134200000, 3809118341028, 146170521796608, 6066719073261639, 270692733123460480, 12917478278285156000, 656311833287586700000, 3.5364920064570087e+22, 2.014028255250519e+24, 1.2085295009773755e+26 ]
[ "nonn" ]
A078755
[ 2, 12, 14, 16, 20, 28, 52, 56, 58, 112, 116, 118, 178, 180, 182, 184, 186, 188, 190, 194, 196, 198, 200, 208, 210, 214, 218, 250, 252, 254 ]
[ "nonn" ]
A103299
[ 1, 1, 2, 2, 4, 6, 12, 4, 6, 2, 2, 4, 12, 4, 2, 2, 2, 2, 4, 2, 2, 2, 2, 2, 4 ]
[ "nonn", "hard", "more" ]