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 A146324 #4 Dec 18 2015 18:17:14 %S A146324 0,1,79712,22307525,361408204,2478531976,11081201168 %N A146324 Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 9 and every element equal to at least one neighbor. %K A146324 nonn %O A146324 4,3 %A A146324 _R. H. Hardin_ Apr 14 2009