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.

A228426 Numerator of Sum(i=1..n-1, 1/i^(2*n-1)).

Original entry on oeis.org

0, 1, 33, 282251, 5170139875, 36297634492764230063, 43540989124396091246149, 248033379485570104849994099153187946961, 17204019459451797001978107903201762504044841332131
Offset: 1

Views

Author

Ralf Stephan, Nov 10 2013

Keywords

Comments

For prime p, p^3 divides a(p), see A130681.

Crossrefs

Denominators are in A228427.

Programs

  • PARI
    a(n)=numerator(sum(i=1,n-1,1/i^(2*n-1)))
Showing 1-1 of 1 results.