A038904 Primes p such that 30 is not a square mod p.

11, 23, 31, 41, 43, 47, 53, 59, 61, 67, 73, 79, 89, 97, 109, 131, 151, 163, 167, 173, 179, 181, 193, 197, 199, 229, 251, 263, 271, 281, 283, 293, 307, 313, 317, 337, 349, 383, 401, 419, 421, 433, 439, 449, 457

Offset

1,1

Comments

Also primes p such that p divides 6^(p-1)/2 + 5^(p-1)/2 - Cino Hilliard, Sep 06 2004

Primes p such that p divides 7^(p-1)/2 - 1. - Cino Hilliard, Sep 06 2004

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Select[Prime@Range[120], JacobiSymbol[30, #] == -1 &] (* Vincenzo Librandi, Sep 09 2012 *)

Crossrefs

Sequence in context: A136001 A158203 A161754 * A179630 A060399 A030665

Adjacent sequences: A038901 A038902 A038903 * A038905 A038906 A038907

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved