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.

A101105 Row sums of triangle A101224, which is related to the Flavius sieve (A000960).

Original entry on oeis.org

1, 5, 18, 44, 90, 167, 257, 397, 596, 782, 1079, 1404, 1793, 2226, 2813, 3337, 4110, 4848, 5632, 6671, 7773, 8861, 10160, 11792, 13046, 14846, 16653, 18494, 20678, 22985, 25064, 27828, 30431, 33181, 36384, 39617, 42795, 46650, 50873, 54438
Offset: 1

Views

Author

Paul D. Hanna, Dec 01 2004

Keywords

Crossrefs

Cf. A101224.

Programs

  • PARI
    {a(n)=local(A);sum(k=1,n,if(k==1,A=n^2-n+1,A=(n-k+1)*floor((A-1)/(n-k+1))))}