%I #7 Sep 09 2012 03:26:40
%S 7,13,19,23,31,41,43,53,59,67,71,73,79,83,97,101,113,149,157,167,179,
%T 193,199,229,233,241,251,293,307,311,313,331,337,349,367,373,389,401,
%U 421,431,439,443,449,461,467,479
%N Primes p such that 34 is not a square mod p.
%H Vincenzo Librandi, <a href="/A038910/b038910.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Prime@Range[120], JacobiSymbol[34, #] == -1 &] (* _Vincenzo Librandi_, Sep 09 2012 *)
%K nonn
%O 1,1
%A _N. J. A. Sloane_.