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 A146546 #4 Dec 18 2015 18:17:15 %S A146546 0,124,44488,32035106,30803948024 %N A146546 Number of n X n arrays of squares of integers summing to 31 with every element equal to at least one neighbor. %K A146546 nonn %O A146546 2,2 %A A146546 _R. H. Hardin_ Apr 14 2009