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 A151996 #1 Jun 01 2010 03:00:00 %S A151996 1431,1731,1831,2432,2732,2832,3171,3181,3272,3282,11511,31531,31631, %T A151996 32532,32632,33151,33161,33252,33262,114311,117311,118311,124312, %U A151996 127312,128312,214321,217321,218321,224322,227322,228322 %N A151996 Erroneous version of A100200. %K A151996 dead %O A151996 1,1