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 A146341 #4 Dec 18 2015 18:17:14 %S A146341 4,64,1494,220578,4527796,36623052,184894958,703103262,2210412872, %T A146341 6056277794,14944420486,33946657490 %N A146341 Number of n X n arrays of squares of integers summing to 10 with every element equal to at least one neighbor. %K A146341 nonn %O A146341 2,1 %A A146341 _R. H. Hardin_ Apr 14 2009