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 A100360 #5 May 11 2007 03:00:00 %S A100360 2,7,71, %T A100360 110427941548649020598956093796432407239217743554726184882600387580788973 %N A100360 Duplicate of A061421. %K A100360 dead %O A100360 1,1