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 A146498 #4 Dec 18 2015 18:17:14 %S A146498 0,60,8472,504864,105970762,3866050034,52280148964,409561925588, %T A146498 2277489900016 %N A146498 Number of n X n arrays of squares of integers summing to 14 with every element equal to at least one neighbor. %K A146498 nonn %O A146498 2,2 %A A146498 _R. H. Hardin_ Apr 14 2009