A231656 Number of n X n 0..2 arrays with no element less than a strict majority of its horizontal, vertical and antidiagonal neighbors.

3, 15, 1197, 345519, 434469343, 2825994465190, 92942728755412088, 14666832942979847986346, 11206356242764353017982723900

Offset: 1

Author

R. H. Hardin, Nov 12 2013

Keywords

• nonn

Comments

Diagonal of A231663

Examples

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