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.

Showing 1-2 of 2 results.

A017140 a(n) = (8*n+6)^4.

Original entry on oeis.org

1296, 38416, 234256, 810000, 2085136, 4477456, 8503056, 14776336, 24010000, 37015056, 54700816, 78074896, 108243216, 146410000, 193877776, 252047376, 322417936, 406586896, 506250000, 623201296
Offset: 0

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Programs

  • Magma
    [(8*n+6)^4: n in [0..35]]; // Vincenzo Librandi, Jul 22 2011
  • Mathematica
    (8*Range[0,20]+6)^4 (* or  *) LinearRecurrence[{5,-10,10,-5,1},{1296,38416,234256,810000,2085136},20] (* Harvey P. Dale, Sep 21 2021 *)

Formula

G.f.: ( -1296-31936*x-55136*x^2-9920*x^3-16*x^4 ) / (x-1)^5. - R. J. Mathar, Aug 26 2015
a(n) = 16*A016840(n). - R. J. Mathar, Aug 26 2015

A016848 a(n) = (4*n+3)^12.

Original entry on oeis.org

531441, 13841287201, 3138428376721, 129746337890625, 2213314919066161, 21914624432020321, 150094635296999121, 787662783788549761, 3379220508056640625, 12381557655576425121, 39959630797262576401
Offset: 0

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Crossrefs

Programs

Showing 1-2 of 2 results.