%I #5 Jan 13 2017 06:34:27
%S 5,7,10,11,13,14,15,17,20,21,22,26,28,29,30,31,33,34,39,40,42,43,44,
%T 45,47,51,52,53,56,58,59,60,62,63,66,68
%N Nonsquares mod 73.
%K nonn,fini,full
%O 1,1
%A _N. J. A. Sloane_.