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 A098678 #3 May 11 2007 03:00:00 %S A098678 353,3499,10429,13619,15269,20219,20593,23057,23189,24091,25741,30713 %N A098678 Duplicate of A056216. %K A098678 dead %O A098678 1,1