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A010376 Squares mod 13. 6

%I

%S 0,1,3,4,9,10,12

%N Squares mod 13.

%t Union[PowerMod[Range[13], 2, 13]] (* _Alonso del Arte_, Dec 13 2019 *)

%o (Sage) [quadratic_residues(13)] # _Zerinvary Lajos_, May 24 2009

%o (Scala) (1 to 13).map(n => (n * n) % 13).toSet.toSeq.sorted // _Alonso del Arte_, Dec 13 2019

%Y Row 13 of A096008.

%Y Cf. A028726.

%K nonn,fini,full

%O 1,3

%A _N. J. A. Sloane_

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Last modified June 2 11:35 EDT 2020. Contains 334771 sequences. (Running on oeis4.)