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 A090944 #2 Jan 09 2009 03:00:00 %S A090944 1,6,140,270,672,1638,2970,6200,8190,18600,18620,27846,30240,32760, %T A090944 55860,105664 %N A090944 Duplicate of A007340. %K A090944 dead %O A090944 1,2