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 A101832 #6 Feb 24 2012 11:08:03 %S A101832 5,11,491,5567,24755 %N A101832 Duplicate of A056253. %K A101832 dead %O A101832 1,1