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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A145729 Partial sums of A052379.

Original entry on oeis.org

0, 8, 80, 664, 5344, 42792, 342384, 2739128, 21913088, 175304776, 1402438288, 11219506392, 89756051232, 718048409960, 5744387279792, 45955098238456, 367640785907776, 2941126287262344, 23529010298098896, 188232082384791320
Offset: 0

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Keywords

Crossrefs

Cf. A052379.

Programs

  • Magma
    [8*(8^(n+1)-7*n-8)/49 : n in [0..20]]; // Vincenzo Librandi, Jul 04 2011
    
  • Mathematica
    lst={};s=0;Do[s+=(s+=(s+=(s+=n)));AppendTo[lst,s],{n,0,5!}];lst
  • PARI
    concat(0, Vec(-8*x/((x-1)^2*(8*x-1)) + O(x^100))) \\ Colin Barker, Oct 27 2014

Formula

a(n) = sum_{i=0..n-1} A052379(i).
a(n) = 8*(8^(n+1)-7*n-8)/49 = 8*A014831(n) = 2*A145730(n). - R. J. Mathar, Oct 21 2008
a(n) = 10*a(n-1)-17*a(n-2)+8*a(n-3). G.f.: -8*x / ((x-1)^2*(8*x-1)). - Colin Barker, Oct 27 2014

Extensions

Edited by R. J. Mathar, Oct 21 2008
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