A038920 Primes p such that 41 is not a square mod p.

3, 7, 11, 13, 17, 19, 29, 47, 53, 67, 71, 79, 89, 97, 101, 109, 137, 149, 151, 157, 167, 179, 181, 191, 193, 199, 211, 227, 229, 233, 239, 257, 263, 281, 293, 311, 313, 317, 331, 347, 383, 397, 421, 439, 457, 463

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

Comments

Also, primes p that are not squares mod 41 (from the quadratic reciprocity law). - Lekraj Beedassy, Jul 13 2004

Links

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

Programs

Mathematica

Select[Prime@Range[120], JacobiSymbol[41, #] == -1 &] (* Vincenzo Librandi, Sep 09 2012 *)

Extensions

Offset changed from 0 to 1 by Vincenzo Librandi, Sep 09 2012