%I #13 Jan 27 2018 06:26:13
%S 0,1,4,5,9,11,14,15,16,20,25,26,31,34,36,44,45,49
%N Squares mod 55.
%o (Sage) [quadratic_residues(55)] # _Zerinvary Lajos_, May 24 2009
%K nonn,fini,full
%O 1,3
%A _N. J. A. Sloane_
