A231644 Number of n X n 0..2 arrays with no element less than a strict majority of its horizontal and vertical neighbors.

3, 35, 920, 137961, 96014413, 374409597564, 7673178325424236, 823755531731133088630, 468550736330699430524865279

Offset: 1

Author

R. H. Hardin, Nov 12 2013

Keywords

• nonn

Comments

Diagonal of A231651

Examples

			Some solutions for n=3
..0..0..0....0..2..1....1..1..2....0..0..1....0..2..0....2..0..0....0..0..0
..0..0..2....0..1..1....0..0..1....2..0..1....0..0..0....1..0..0....0..2..1
..1..1..1....0..1..1....0..0..1....1..0..0....0..0..2....1..2..2....0..0..0