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 A146347 #4 Dec 18 2015 18:17:14 %S A146347 0,60,1212,326156,11838000,132595090,833892048,3734547512,13353954384, %T A146347 40631696580,109398542704,267495297138 %N A146347 Number of n X n arrays of squares of integers summing to 11 with every element equal to at least one neighbor. %K A146347 nonn %O A146347 2,2 %A A146347 _R. H. Hardin_ Apr 14 2009