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 A074191 #2 May 11 2007 03:00:00 %S A074191 1,1,1,8,8,144,144,576,5184,518400,518400,2073600,2073600,101606400 %N A074191 Duplicate of A090630. %K A074191 dead %O A074191 1,4