A038938 - OEIS

%I #7 Sep 09 2012 11:08:53

%S 5,13,17,31,41,47,53,59,67,73,79,83,89,97,107,109,113,127,137,139,149,

%T 173,179,181,191,193,197,227,263,271,277,283,311,337,347,349,359,367,

%U 373,397,409,419,433,449,479,499

%N Primes p such that 58 is not a square mod p.

%H Vincenzo Librandi, <a href="/A038938/b038938.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime@Range[120], JacobiSymbol[58, #] == -1 &] (* _Vincenzo Librandi_, Sep 09 2012 *)

%o (PARI) select(n->!issquare(Mod(58,n)),primes(100)) \\ _Charles R Greathouse IV_, 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