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Squares mod 55.
0

%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_