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 A146201 #4 Dec 18 2015 18:17:14 %S A146201 0,12,1640,23650,129116,457330,1265468,2979098,6251260,12030146, %T A146201 21635420,36843178,59979548,94022930,142714876,210679610,303552188, %U A146201 428115298,592444700,806063306 %N A146201 Number of n X n arrays of squares of integers summing to 7 with every element equal to at least one neighbor. %K A146201 nonn %O A146201 2,2 %A A146201 _R. H. Hardin_ Apr 14 2009