A165574 Legendre symbol (n,263).

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

0,1

Comments

263 is the 12th safe prime, A005385(12).

Links

Antti Karttunen, Table of n, a(n) for n = 0..263

Index entries for linear recurrences with constant coefficients, order 262.

Mathematica

JacobiSymbol[Range[0, 90], 263] (* Harvey P. Dale, Oct 04 2020 *)

Prog

(PARI) a(n)=kronecker(n, 263) \\ Charles R Greathouse IV, May 26 2026

Crossrefs

Partial sums: A165576.

Legendre symbols mod p: A102283 (p=3), A080891 (p=5), A175629 (p=7), A011582-A011631 (p=11-251), A165573 (p=257), this sequence (p=263).

Cf. A097343, A005385.

Sequence in context: A165481 A165573 A057428 * A165581 A165586 A134824

Adjacent sequences: A165571 A165572 A165573 * A165575 A165576 A165577

Keyword

sign,mult,easy

Author

Antti Karttunen, Sep 22 2009

Status

approved