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Primes p such that 37 is not a square mod p.
3

%I #7 Sep 09 2012 03:26:46

%S 2,5,13,17,19,23,29,31,43,59,61,79,89,97,103,109,113,131,163,167,179,

%T 191,193,199,227,239,241,251,257,277,281,283,311,313,331,347,353,383,

%U 389,401,409,421,431,439,449,457

%N Primes p such that 37 is not a square mod p.

%H Vincenzo Librandi, <a href="/A038914/b038914.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime@Range[120], JacobiSymbol[37, #] == -1 &] (* _Vincenzo Librandi_, Sep 09 2012 *)

%K nonn

%O 1,1

%A _N. J. A. Sloane_.