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 A003891 #10 Jun 14 2024 22:31:08
%S A003891 1,15,15,30,30,30,30,30,30,30,31,32,32,32,32,32,32,32
%N A003891 Degrees of irreducible representations of group L2(31).
%D A003891 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 A003891 (GAP) List(Irr(CharacterTable("L2(31)")), chi->chi[1]); # _Eric M. Schmidt_, Jul 18 2012
%K A003891 nonn,fini,full
%O A003891 1,2
%A A003891 _N. J. A. Sloane_