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 A028737 #16 Mar 21 2023 04:55:49 %S A028737 2,3,5,6,7,8,10,11,13,14,15,17,18,19,20,21,22,23 %N A028737 Nonsquares mod 24. %C A028737 The first 18 terms of A092206. - _R. J. Mathar_, Mar 21 2023 %t A028737 Complement[Range[0, 23], PowerMod[Range[0, 23], 2, 24]] (* _Alonso del Arte_, Nov 24 2019 *) %o A028737 (Scala) val squaresMod24 = (0 to 23).map(n => n * n).map(_ % 24) %o A028737 (0 to 23).diff(squaresMod24) // _Alonso del Arte_, Nov 24 2019 %Y A028737 Cf. A010386. %K A028737 nonn,fini,full,easy %O A028737 1,1 %A A028737 _N. J. A. Sloane_