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.

A128802 a(n) = n*(n-1)*8^n.

Original entry on oeis.org

0, 0, 128, 3072, 49152, 655360, 7864320, 88080384, 939524096, 9663676416, 96636764160, 944892805120, 9070970929152, 85761906966528, 800444465020928, 7388718138654720, 67553994410557440, 612489549322387456
Offset: 0

Views

Author

Mohammad K. Azarian, Apr 07 2007

Keywords

Crossrefs

Programs

  • Magma
    [(n^2-n)*8^n: n in [0..20]]; // Vincenzo Librandi, Nov 16 2011
  • Mathematica
    Table[(n^2-n)8^n,{n,0,20}] (* or *) LinearRecurrence[{24,-192,512},{0,0,128},20] (* Harvey P. Dale, Nov 05 2011 *)

Formula

a(n) = 24*a(n-1) - 192*a(n-2) + 512*a(n-3); a(0)=0, a(1)=0, a(2)=128. - Harvey P. Dale, Nov 05 2011
G.f.: -128*x^2/(8*x-1)^3. - Harvey P. Dale, Nov 05 2011
a(n) = 128*A081138(n). - R. J. Mathar, Apr 26 2015