%I #13 Jan 27 2018 06:26:20
%S 0,1,4,6,7,9,16,19,24,25,28,30,36,39,42,43,45,49,54,55
%N Squares mod 57.
%o (Sage) [quadratic_residues(57)] # _Zerinvary Lajos_, May 24 2009
%K nonn,fini,full
%O 1,3
%A _N. J. A. Sloane_
