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 A016160 #3 May 11 2007 03:00:00 %S A016160 0,1,11,91,671,4651,31031,201811,1288991,8124571,50700551 %N A016160 Duplicate of A005062. %K A016160 dead %O A016160 0,3