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 A003890 #10 Jun 14 2024 22:31:08
%S A003890 1,15,15,28,28,28,28,28,28,28,29,30,30,30,30,30,30
%N A003890 Degrees of irreducible representations of group L2(29).
%D A003890 J. H. Conway, R. T. Curtis, S. P. Norton, R. A. Parker and R. A. Wilson, ATLAS of Finite Groups. Oxford Univ. Press, 1985 [for best online version see https://oeis.org/wiki/Welcome#Links_to_Other_Sites].
%o A003890 (GAP) List(Irr(CharacterTable("L2(29)")), chi->chi[1]); # _Eric M. Schmidt_, Jul 18 2012
%K A003890 nonn,fini,full
%O A003890 1,2
%A A003890 _N. J. A. Sloane_