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 1-1 of 1 results.

A222410 Partial sums of A008534, or crystal ball sequence for {A_6}* lattice.

Original entry on oeis.org

1, 15, 113, 575, 2171, 6581, 16955, 38613, 79885, 153091, 275661, 471395, 771863, 1217945, 1861511, 2767241, 4014585, 5699863, 7938505, 10867431, 14647571, 19466525, 25541363, 33121565, 42492101, 53976651
Offset: 0

Views

Author

N. J. A. Sloane, Feb 23 2013

Keywords

Crossrefs

Cf. A008534.

Programs

  • Magma
    /* By definition: */ A008534:=func; [&+[A008534(i): i in [0..n]]: n in [0..25]]; // Bruno Berselli, Feb 28 2013
  • Mathematica
    LinearRecurrence[{7, -21, 35, -35, 21, -7, 1}, {1, 15, 113, 575, 2171, 6581, 16955}, 26] (* Bruno Berselli, Feb 28 2013 *)

Formula

G.f.: (1+8*x+29*x^2+64*x^3+29*x^4+8*x^5+x^6)/(1-x)^7. [Bruno Berselli, Feb 28 2013]
a(n) = 1+(7/36)*n*(n+1)*(n^4+2*n^3+8*n^2+7*n+18). [Bruno Berselli, Feb 28 2013]
Showing 1-1 of 1 results.