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.

A373006 Antidiagonal sums of A373005.

Original entry on oeis.org

1, 2, 6, 10, 20, 41, 84, 162, 324, 637, 1276, 2509, 5018, 9907, 19816, 39202, 78404, 155381, 310764, 616665, 1233330, 2449867, 4899736, 9740685, 19481370, 38754731, 77509464, 154276027, 308552054, 614429671, 1228859344, 2448023842, 4896047684, 9756737701, 19513475404
Offset: 0

Views

Author

Stefano Spezia, May 19 2024

Keywords

Crossrefs

Cf. A000079, A373005.

Programs

  • Mathematica
    A373005[n_,k_]:=If[OddQ[k],Sum[Binomial[n,i],{i,0,(k-1)/2}],Sum[Binomial[n,i],{i,0,k/2-1}]+Binomial[n-1,k/2-1]]; a[n_]:=Sum[A373005[n-k,n],{k,0,n}]; Array[a,35,0]

Formula

Limit_{n->oo} a(n)/a(n-1) = 2.
Showing 1-1 of 1 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.