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 A092567 #4 Sep 29 2006 03:00:00 %S A092567 5,13,89,389,2593,12401,77069,262897,11593,373649,766261,3358169 %N A092567 Duplicate of A055623. %K A092567 dead %O A092567 1,1