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 A067512 #4 Nov 10 2007 03:00:00 %S A067512 1,8,512,68719476736, %T A067512 76957043352332967211482500195592995713046365762627825523336510555167425334955489475418488779072100860950445293568 %N A067512 Duplicate of A067505. %K A067512 dead %O A067512 1,2