A267782 Number of n X n 0..1 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

2, 16, 216, 5081, 122770, 4245574, 132388406, 5520112546, 217360101006, 10635681264937

Offset: 1

Author

R. H. Hardin, Jan 20 2016

Keywords

• nonn

Comments

Diagonal of A267788.

Examples

			Some solutions for n=4
..1..0..0..1....0..1..1..0....0..0..0..0....1..1..1..1....0..1..0..0
..0..0..0..0....0..1..0..0....0..1..1..0....0..0..0..0....1..0..1..1
..1..1..1..1....1..0..0..1....1..1..0..1....1..1..0..1....0..1..0..0
..1..1..0..1....1..1..1..1....1..0..1..1....0..1..1..0....1..0..0..1
		

Crossrefs

Cf. A267788.