login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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. 1
2520, 3600, 27720, 360360, 5173168, 1296000, 153679680, 8923714800, 16003008000 (list; graph; refs; listen; history; text; internal format)
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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 27 03:21 EDT 2020. Contains 337380 sequences. (Running on oeis4.)