This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A010397 #20 Sep 08 2022 08:44:37 %S A010397 0,1,4,9,13,16,25,28 %N A010397 Squares mod 36. %t A010397 Union[PowerMod[Range[36], 2, 36]] (* _Vincenzo Librandi_, Jan 31 2020 *) %o A010397 (Sage) [quadratic_residues(36)] # _Zerinvary Lajos_, May 24 2009 %o A010397 (Magma) [n: n in [0..35] | IsSquare(R! n) where R:= ResidueClassRing(36)]; // _Vincenzo Librandi_, Jan 31 2020 %Y A010397 Cf. A028749. %K A010397 nonn,fini,full %O A010397 1,3 %A A010397 _N. J. A. Sloane_