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 A010400 #21 Jan 12 2024 06:34:27 %S A010400 0,1,3,4,9,10,12,13,16,22,25,27,30,36 %N A010400 Squares mod 39. %C A010400 A070461 sorted, duplicates removed. - _R. J. Mathar_, Jan 12 2024 %t A010400 Union[PowerMod[Range[39], 2, 39]] (* _Vincenzo Librandi_, Dec 27 2019 *) %o A010400 (Sage) [quadratic_residues(39)] # _Zerinvary Lajos_, May 24 2009 %Y A010400 Cf. A010439. %K A010400 nonn,fini,full %O A010400 1,3 %A A010400 _N. J. A. Sloane_