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 A085055 #2 Jan 09 2009 03:00:00 %S A085055 1,2,4,32,288,576,6912,13824,207360,3317760,59719680,1194393600 %N A085055 Duplicate of A075070. %K A085055 dead %O A085055 0,2