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%I #7 Sep 09 2012 14:50:48
%S 13,19,29,41,43,47,59,67,71,79,89,103,107,109,113,131,137,139,149,151,
%T 157,163,167,173,191,193,223,233,239,241,251,293,337,347,359,367,383,
%U 389,397,409,419,421,431,443,457
%N Primes p such that 70 is not a square mod p.
%H Vincenzo Librandi, <a href="/A038954/b038954.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Prime@Range[120], JacobiSymbol[70, #] == - 1 &] (* _Vincenzo Librandi_, Sep 09 2012 *)
%o (PARI) select(n->!issquare(Mod(70,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
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