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 A217630 #7 Jul 22 2025 23:41:04 %S A217630 2,6,66,1418,83074,11181454,3709621842,2950299178242,5681245408101350, %T A217630 26398983976826626170 %N A217630 Number of n X n arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..1 n X n array. %C A217630 Diagonal of A217637 %e A217630 Some solutions for n=3 %e A217630 ..0..1..1....0..1..1....0..0..0....0..0..1....0..0..1....0..1..0....0..0..0 %e A217630 ..0..0..0....0..0..1....0..1..0....0..0..0....0..0..1....0..0..0....0..0..0 %e A217630 ..0..0..0....0..0..1....0..0..0....0..0..1....0..0..0....0..0..0....1..0..1 %K A217630 nonn %O A217630 1,1 %A A217630 _R. H. Hardin_ Oct 09 2012