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 A146552 #6 Jul 23 2025 23:29:03 %S A146552 0,244,55564,78274164,112036913016 %N A146552 Number of n X n arrays of squares of integers summing to 37 with every element equal to at least one neighbor. %K A146552 nonn %O A146552 2,2 %A A146552 _R. H. Hardin_, Apr 14 2009