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 A217977 #7 Jul 22 2025 23:45:34 %S A217977 2,2,16,98,1942,54504,3375350,368335390,79138501972,31734389399738, %T A217977 24359808536352098,35370314418915229140 %N A217977 Number of n X n arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random 0..1 n X n array. %C A217977 Diagonal of A217982 %e A217977 Some solutions for n=3 %e A217977 ..0..0..0....0..0..0....0..0..0....0..0..1....1..0..0....1..1..1....0..0..1 %e A217977 ..0..0..0....0..0..0....0..0..0....0..0..1....0..0..0....0..0..1....0..0..0 %e A217977 ..1..1..1....0..0..0....1..0..0....0..0..1....0..0..0....0..0..1....1..0..0 %K A217977 nonn %O A217977 1,1 %A A217977 _R. H. Hardin_ Oct 16 2012