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 A146496 #6 Jun 26 2025 14:43:37 %S A146496 0,64,4832,450473,57412424,1363499112,14031503424,90356045683, %T A146496 431216399848 %N A146496 Number of n X n arrays of squares of integers summing to 13 with every element equal to at least one neighbor. %K A146496 nonn %O A146496 2,2 %A A146496 _R. H. Hardin_, Apr 14 2009