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22 is a square mod p.
2

%I #7 Sep 07 2012 13:39:50

%S 2,3,7,11,13,29,59,61,67,79,89,97,101,109,113,127,137,149,151,163,167,

%T 173,179,197,239,251,257,263,271,277,293,313,331,349,353,359,373,379,

%U 401,419,431,433,439,443,449,461

%N 22 is a square mod p.

%H Vincenzo Librandi, <a href="/A038895/b038895.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[100]], JacobiSymbol[22, #] != -1 &] (* _Vincenzo Librandi_, Sep 07 2012 *)

%K nonn

%O 1,1

%A _N. J. A. Sloane_.