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 A010402 #21 Jan 12 2024 06:35:44 %S A010402 0,1,2,4,5,8,9,10,16,18,20,21,23,25,31,32,33,36,37,39,40 %N A010402 Squares mod 41. %C A010402 A070463 sorted, duplicates removed. - _R. J. Mathar_, Jan 12 2024 %t A010402 Union[PowerMod[Range[41], 2, 41]] (* _Vincenzo Librandi_, Dec 27 2019 *) %o A010402 (Sage) [quadratic_residues(41)] # _Zerinvary Lajos_, May 24 2009 %Y A010402 Cf. A010443. %K A010402 nonn,fini,full %O A010402 1,3 %A A010402 _N. J. A. Sloane_