%I #4 Mar 30 2012 16:47:09
%S 2,3,5,8,10,11,12,13,14,15,17,18,20,21,22,23,26,27,29,31,32,33,34,35,
%T 37,38,40,41,44,46,47,48,50,51,52,53,56
%N Nonsquares mod 57.
%K nonn,fini,full
%O 1,1
%A _N. J. A. Sloane_.