cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A026870 T(2n,n-4), T given by A026758.

Original entry on oeis.org

1, 14, 125, 911, 5920, 35785, 205991, 1145389, 6208974, 33019048, 173020608, 896198760, 4599517316, 23431544274, 118650995097, 597852859509, 3000150410123, 15004346987002, 74827169741248, 372278740384010, 1848449139166668
Offset: 4

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A026871 T(2n,n-3), T given by A026758.

Original entry on oeis.org

1, 11, 82, 519, 3010, 16563, 88092, 457800, 2340519, 11824761, 59217488, 294596574, 1458173626, 7189542273, 35341573246, 173322863748, 848473455491, 4147736942919, 20254228370249, 98824420111063, 481889327547656
Offset: 3

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A026872 T(2n,n+1), T given by A026758.

Original entry on oeis.org

1, 4, 16, 65, 268, 1120, 4738, 20265, 87542, 381600, 1677170, 7427098, 33118073, 148618605, 670849720, 3044548675, 13886260129, 63627798355, 292789942333, 1352614829275, 6271530026012, 29176789293146, 136163014291526, 637294991967740
Offset: 1

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A026873 T(2n,n+2), T given by A026758.

Original entry on oeis.org

1, 6, 29, 131, 576, 2505, 10857, 47081, 204724, 893766, 3920310, 17283214, 76596745, 341264480, 1528405584, 6880122182, 31123426923, 141456560459, 645811464667, 2960966353657, 13630215685869, 62981140857061, 292049203818249
Offset: 2

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A026874 T(2n,n+3), T given by A026758.

Original entry on oeis.org

1, 8, 46, 233, 1109, 5102, 23020, 102718, 455608, 2015496, 8912244, 39452385, 175026904, 778762339, 3476922430, 15581908258, 70108401416, 316728595048, 1436752952543, 6543920192177, 29923907812601, 137363507432013, 632899405886519
Offset: 3

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A026875 T(2n,n+4), T given by A026758.

Original entry on oeis.org

1, 10, 67, 379, 1959, 9597, 45448, 210514, 960942, 4344683, 19525389, 87444051, 390992168, 1747941216, 7821157977, 35055231757, 157484297780, 709447933434, 3205851742378, 14534550949750, 66123187204244, 301875869514852
Offset: 4

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A026876 T(2n+1, n+1), T given by A026758.

Original entry on oeis.org

1, 3, 11, 43, 174, 721, 3042, 13022, 56420, 246977, 1090846, 4856162, 21770665, 98217318, 445634370, 2032434475, 9313305870, 42861416044, 198038717055, 918368326483, 4273103732070, 19944292913477, 93356009312511, 438150836819153
Offset: 0

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Comments

The invert transform of this sequences (shifted) appears to be A165538 (conjectured). - Michael D. Weiner, Aug 04 2018

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Formula

G.f. f satisfies: x^6*f^4 + x^3*(4*x-1)*(x-1)*f^3 + x*(x-1)*(6*x^2-6*x+1)*f^2 + (4*x-1)*(x-1)^2*f + (x-1)^2 = 0 (conjectured). - Michael D. Weiner, Aug 04 2018

A026877 T(2n+1,n+2), T given by A026758.

Original entry on oeis.org

1, 5, 22, 94, 399, 1696, 7243, 31122, 134623, 586324, 2570936, 11347408, 50401287, 225215350, 1012114200, 4572954259, 20766382311, 94751225278, 434246502792, 1998426293942, 9232496379669, 42807004979015, 199144155148587
Offset: 1

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A026878 a(n) = T(2n+1,n+3), T given by A026758.

Original entry on oeis.org

1, 7, 37, 177, 809, 3614, 15959, 70101, 307442, 1349374, 5935806, 26195458, 116049130, 516291384, 2307167923, 10357044612, 46705335181, 211564961875, 962540059715, 4397719306200, 20174135878046, 92905048669662, 429412711250262
Offset: 2

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Crossrefs

Cf. A026758.

A026879 T(2n+1,n+4), T given by A026758.

Original entry on oeis.org

1, 9, 56, 300, 1488, 7061, 32617, 148166, 666122, 2976438, 13256927, 58977774, 262470955, 1169754507, 5224863646, 23403066235, 105163633173, 474212892828, 2146200885977, 9749771934555, 44458458762351, 203486694636257, 934775275401371
Offset: 3

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