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 A085327 #3 May 11 2007 03:00:00 %S A085327 1,3,9,25,67,177,465,1219,3193,8361,21891,57313,150049,392835,1028457 %N A085327 Duplicate of A069403. %K A085327 dead %O A085327 0,2