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 A028595 #3 May 11 2007 03:00:00 %S A028595 1,6,24,56,114,168,280,294,444,390,840,636,1176,1176,1512 %N A028595 Duplicate of A002653. %K A028595 dead %O A028595 0,2