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 A135995 #1 Jun 29 2008 03:00:00 %S A135995 29,683,997,2207,10891,67883 %N A135995 Erroneous version of A046850 found on the Internet. %K A135995 dead %O A135995 1,1