A232069 Number of (n+1)X(n+1) 0..1 arrays with every element equal to some horizontal, diagonal or antidiagonal neighbor, with top left element zero.

3, 87, 6624, 2265691, 3154769585, 16761785898550, 346245388962998639, 27933597031900237580649, 8787110268003730673863070121, 10774541106851322777417902818902431

Offset: 1

Author

R. H. Hardin, Nov 17 2013

Keywords

• nonn

Comments

Diagonal of A232076

Examples

			Some solutions for n=3
..0..0..0..0....0..1..1..1....0..0..0..1....0..0..1..1....0..0..0..0
..1..1..0..1....1..0..1..1....0..1..1..0....1..1..0..1....0..0..0..0
..0..0..1..0....0..0..0..0....1..0..1..1....1..1..0..0....1..0..0..0
..0..0..1..1....1..1..1..1....0..1..1..1....0..0..1..0....1..1..1..0