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 A118893 #19 Aug 15 2015 14:54:36 %S A118893 9,289,676,9801,12168,235225,332929,465125,1825201,11309769,384199201, %T A118893 592192225,4931691076,5425069448,13051463049,221322261601, %U A118893 443365544449,865363202001,8192480787001,11968683934832,13325427460801,15061377048201,28821995554248 %N A118893 Duplicate of A078326. %K A118893 dead %O A118893 1,1 %A A118893 _Eric W. Weisstein_, May 04 2006