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 A067927 #3 Jul 19 2005 03:00:00 %S A067927 0,1,5,43,48,53,3301,48515 %N A067927 Duplicate of A038546. %K A067927 dead %O A067927 0,3