A165573 Legendre symbol (n,257).

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

Offset

0,1

Comments

257 is the 3rd Fermat prime, A019434(3).

Links

A. Karttunen, Table of n, a(n) for n = 0..257

Prog

(PARI) a(n) = kronecker(n, 257); \\ Michel Marcus, Mar 12 2017

Crossrefs

Partial sums: A165575.

Sequence in context: A165591 A165471 A165481 * A057428 A165574 A165581

Adjacent sequences: A165570 A165571 A165572 * A165574 A165575 A165576

Keyword

sign,mult

Author

Antti Karttunen, Sep 22 2009

Status

approved