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 A061080 #2 Sep 29 2006 03:00:00 %S A061080 3,4,6,12,72,559872 %N A061080 Another erroneous version of A009287. %K A061080 dead %O A061080 1,1