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 A099926 #2 May 11 2007 03:00:00 %S A099926 1,2,2,5,6,12,17,30,46,77,122,200,321,522,842,1365,2206,3572,5777,9350 %N A099926 Duplicate of A098600. %K A099926 dead %O A099926 0,2