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 A060321 #3 Nov 10 2007 03:00:00 %S A060321 2,3,5,21,55,377,34,2584,46368,377,832040,4181,6763,987,196418 %N A060321 Erroneous version of A051694. %K A060321 dead %O A060321 1,1