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 A146550 #4 Dec 18 2015 18:17:15 %S A146550 0,120,48552,61209924,73872918868 %N A146550 Number of n X n arrays of squares of integers summing to 35 with every element equal to at least one neighbor. %K A146550 nonn %O A146550 2,2 %A A146550 _R. H. Hardin_ Apr 14 2009