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Primes p such that 38 is not a square mod p.
2

%I #6 Sep 09 2012 03:26:49

%S 3,5,7,23,41,47,59,61,67,89,97,101,107,113,149,157,179,191,193,197,

%T 199,211,227,229,239,241,257,263,271,277,281,307,311,331,337,349,359,

%U 367,379,389,397,401,409,433,449

%N Primes p such that 38 is not a square mod p.

%H Vincenzo Librandi, <a href="/A038916/b038916.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime@Range[120], JacobiSymbol[38, #] == -1 &] (* _Vincenzo Librandi_, Sep 09 2012 *)

%K nonn

%O 1,1

%A _N. J. A. Sloane_.

%E Offset changed from 0 to 1 by _Vincenzo Librandi_, Sep 09 2012