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 A025517 #5 Mar 30 2012 18:35:25 %S A025517 1,28,253,794,821,854,1123,1394,1493,1520,1529,193136,193169,194032, %T A025517 194041,195374,196367,196376,198567,198630,199145,199550,199857, %U A025517 200282,201755,201782,201791,205326,205683,205710,205803,206028,206061,206088 %N A025517 Least k such that first k terms of A022303 contain n more 1's than 2's. %K A025517 nonn %O A025517 1,2 %A A025517 _David W. Wilson_