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 A027962 #2 May 11 2007 03:00:00 %S A027962 1,5,13,28,54,98,171,291,487,806,1324,2164,3525,5729,9297,15072 %N A027962 Duplicate of A023537. %K A027962 dead %O A027962 2,2