A165581 Legendre symbol (n,524287).

0, 1, 1, -1, 1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, -1, 1, -1, -1, 1, -1, -1, -1, 1, 1, -1, -1, 1, 1, 1, 1, 1, -1, 1, 1, 1, -1, -1, -1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, -1, 1, -1, 1, 1, 1, 1, -1, 1, -1, 1, -1, 1, 1, -1, 1, 1, 1, 1, 1, 1, -1, -1, 1, -1, 1, -1, 1, 1, -1

Offset: 0

Author

Antti Karttunen, Sep 22 2009

Keywords

• sign
• mult
• easy

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

Crossrefs

Partial sums: A165582.

Programs

PARI

a(n)=kronecker(n,524287) \\ Charles R Greathouse IV, Aug 06 2012