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.

A380548 Main diagonal of A125585.

Original entry on oeis.org

1, 3, 6, 10, 14, 18, 25, 30, 35, 40, 51, 57, 63, 69, 75, 91, 98, 105, 112, 119, 126, 148, 156, 164, 172, 180, 188, 196, 225, 234, 243, 252, 261, 270, 279, 288, 325, 335, 345, 355, 365, 375, 385, 395, 405, 451, 462, 473, 484, 495, 506, 517, 528, 539, 550, 606
Offset: 1

Views

Author

Alois P. Heinz, Jan 26 2025

Keywords

Crossrefs

Main diagonal of A125585.

Programs

  • Maple
    a:= n-> (m-> n+(m+1)*(n-1-m/2))(floor((sqrt(8*n-7)-1)/2)):
    seq(a(n), n=1..56);

Formula

a(n) = A125585(n,n).
Showing 1-1 of 1 results.