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 A092302 #4 Mar 31 2012 14:11:24 %S A092302 0,0,0,5,4,9,5,1,1,0,55,55,1,5,1,9,5,1,1,0,0,0,0,5,4,9,5,1,1,1,1,1,1,4 %N A092302 Delete all letters except c,d,i,l,m,u,v,x from n then read as Roman numeral if possible, otherwise 0. %C A092302 U counts as a V. %Y A092302 See A002904 for another version. %K A092302 nonn,word %O A092302 1,4 %A A092302 _N. J. A. Sloane_, following a suggestion of _Ray G. Opao_, Feb 10 2004 %E A092302 Ambiguous or ill-defined beyond the last term shown.