A038961 - OEIS

%I #6 Sep 08 2012 05:16:16

%S 7,11,13,17,19,23,37,41,53,61,67,71,73,83,101,113,131,137,139,163,167,

%T 173,179,191,227,241,271,283,293,307,317,331,349,379,389,401,409,421,

%U 439,443,449,461,463,479,487,499

%N Primes p such that 77 is a square mod p.

%H Vincenzo Librandi, <a href="/A038961/b038961.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[110]], ! JacobiSymbol[77, #] == -1 &] (* _Vincenzo Librandi_, Sep 08 2012 *)

%K nonn

%O 1,1

%A _N. J. A. Sloane_.

%E Offset changed from 0 to 1 by _Vincenzo Librandi_, Sep 08 2012