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 A195501 #6 Mar 30 2012 18:57:47 %S A195501 4,325,435,7480,769189,998691,1760400,72332699,107770201,162402622743, %T A195501 150321171634588,314779738565193,4979439027990791,25240412071733925, %U A195501 26320772661145332,150784475760058387,381611630092964177,506075333191877232 %N A195501 Numerators b(n) of Pythagorean approximations b(n)/a(n) to sqrt(2). %C A195501 See A195500 for discussion, Mathematica program, and list of related sequences. %Y A195501 Cf. A195501, A195503. %K A195501 nonn %O A195501 1,1 %A A195501 _Clark Kimberling_, Sep 20 2011