%I #13 Jan 29 2018 02:47:37
%S 0,1,4,9,16,20,25,36,41,49,64,65
%N Squares mod 80.
%o (Sage) [quadratic_residues(80)] # _Zerinvary Lajos_, May 28 2009
%K nonn,fini,full
%O 1,3
%A _N. J. A. Sloane_
