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 A146202 #4 Dec 18 2015 18:17:14 %S A146202 0,6,10678,169232,895970,3151504,8793698,21026206,44936970,88129194, %T A146202 161444970,279781318,462998626,736921490,1134431954,1696655150, %U A146202 2474237338 %N A146202 Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 7 and every element equal to at least one neighbor. %K A146202 nonn %O A146202 3,2 %A A146202 _R. H. Hardin_ Apr 14 2009