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 A114514 #1 Feb 24 2006 03:00:00 %S A114514 7,8,9,4,5,6,1,2,3,0 %N A114514 The digits on a numerical pad from upper left to lower right. %K A114514 nonn,fini,full %O A114514 1,1 %A A114514 Lina Inverse (lafresnaie(AT)free.fr), Feb 14 2006