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%I #19 Jan 13 2020 02:36:17
%S 0,1,4,9,14,16,22,23,25,29,30,35,36,39,42,43,49,51,53,56,64,65,74,77,
%T 78,79,81,88
%N Squares mod 91.
%t Union[PowerMod[Range[91], 2, 91]] (* _Alonso del Arte_, Jan 07 2020 *)
%o (Sage) [quadratic_residues(91)] # _Zerinvary Lajos_, May 28 2009
%o (Scala) (1 to 91).map(n => n * n % 91).toSet.toSeq.sorted // _Alonso del Arte_, Jan 13 2020
%Y Cf. A028804, A096008 (row 91).
%K nonn,fini,full,easy
%O 1,3
%A _N. J. A. Sloane_
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