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 A085316 #3 May 11 2007 03:00:00 %S A085316 2,257,65537,2070241,100006561,435746497,815730977,832507937, %T A085316 1475795617 %N A085316 Duplicate of A006686. %K A085316 dead %O A085316 1,1