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Nonsquares mod 39.
0

%I #4 Mar 30 2012 16:47:09

%S 2,5,6,7,8,11,14,15,17,18,19,20,21,23,24,26,28,29,31,32,33,34,35,37,38

%N Nonsquares mod 39.

%K nonn,fini,full

%O 1,1

%A _N. J. A. Sloane_.