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 A081274 #4 May 11 2007 03:00:00 %S A081274 1,7,22,46,79,121,172,232,301,379,466,562,667,781,904,1036,1177,1327 %N A081274 Duplicate of A038764. %K A081274 dead %O A081274 0,2