A165573 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

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