%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_.