OFFSET
0,1
COMMENTS
524287 is the 7th Mersenne prime, A000668(7) = 2^19 - 1.
Periodic with period 524287. - Charles R Greathouse IV, Aug 06 2012
LINKS
A. Karttunen, Table of n, a(n) for n = 0..524287
PROG
(PARI) a(n)=kronecker(n, 524287) \\ Charles R Greathouse IV, Aug 06 2012
CROSSREFS
KEYWORD
sign,mult,easy
AUTHOR
Antti Karttunen, Sep 22 2009
STATUS
approved