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

1,1

Comments

Diagonal of A267788.

Links

Table of n, a(n) for n=1..10.

Example

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.

Sequence in context: A365585 A012056 A062971 * A012164 A264543 A223638

Adjacent sequences: A267779 A267780 A267781 * A267783 A267784 A267785

Keyword

nonn

Author

R. H. Hardin, Jan 20 2016

Status

approved