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 A099201 #1 Feb 20 2005 03:00:00 %S A099201 0,1,37,1172,62814,5488059,710771275,127661752406,30341995265036, %T A099201 9215499383109573,3481204991988351553,1600596371590399671784, %U A099201 880013938000716625811210,570091859313674511164175135 %N A099201 A bisection of A002807. %Y A099201 Cf. A002807. %K A099201 nonn %O A099201 0,3 %A A099201 Lambert Klasen (Lambert.Klasen(AT)gmx.net), Nov 16 2004