A094515 Consider numbers which are denominators of at least one reduced rational sum{k=1 to m} 1/k^n, taken over all positive integers m and n (a sequence not yet in the database). Sequence gives denominators which occur more than once.

2520, 3600, 27720, 360360, 5173168, 1296000, 153679680, 8923714800, 16003008000

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Crossrefs

Cf. A094509.

Sequence in context: A068352 A175754 A068547 * A179700 A066531 A258540

Adjacent sequences: A094512 A094513 A094514 * A094516 A094517 A094518

Keyword

nonn

Author

N. J. A. Sloane, based on a suggestion of Hugo van der Sanden, Jun 05, 2004

Extensions

The sequence of denominators should be added too.

Status

approved