A238316 Number of (n+1)X(n+1) 0..2 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors.

3, 67, 4294, 721939, 459256128, 1266938409578, 13394202897232848, 504070949140994691397

Offset: 1

Author

R. H. Hardin, Feb 24 2014

Keywords

• nonn

Comments

Diagonal of A238323

Examples

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