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 A185312 #8 Jul 07 2015 22:25:37
%S A185312 1,2,3,1,3,4,3,2,3,4,3,1,4,2,4,3,2,4,2,1,2,3,2,4,3,1,3,2,1,2,4,2,1,2,
%T A185312 3,1,2,4,1,4,3,4,1,4,2,4,3,2,4,2,1,2,4,2,3,2,1,3,2,3,4,2,1,2,4,3,4,2,
%U A185312 4,3,1,3,4,2,3,2,1,3,2,3,4,3,1,3,4,3,2,4,3,4,1,4,2,4,3,2,3,1
%N A185312 Keränen's sequence of length 98 on the alphabet{1,2,3,4} used to construct an abelian squarefree endomorphism of size 98.
%H A185312 V. Keränen, <a href="http://south.rotol.ramk.fi/keranen/ias2002/NewAbelianSquare-FreeDT0L-LanguagesOver4Letters.nb">New Abelian Square-Free DT0L-Languages over 4 Letters</a>
%Y A185312 Cf. A185311.
%K A185312 nonn,fini,full
%O A185312 1,2
%A A185312 _N. J. A. Sloane_, Jan 26 2012