A267713 Number of n X n 0..1 arrays with every repeated value in every row and column greater than the previous repeated value.

2, 16, 102, 872, 4444, 26906, 116036, 592110, 2411426, 11438402, 45729992, 209204918, 830949994, 3719941006, 14733123252, 64989888570

Offset

1,1

Comments

Diagonal of A267719.

Links

Table of n, a(n) for n=1..16.

Example

Some solutions for n=5
..1..0..1..1..0....1..0..1..1..0....1..0..1..0..1....0..1..1..0..1
..0..1..0..0..1....0..1..0..0..1....0..1..0..1..0....1..0..0..1..1
..0..0..1..1..0....1..0..1..1..0....1..0..1..0..1....0..1..0..1..0
..1..0..0..1..0....1..0..0..1..1....1..0..1..0..0....1..0..1..0..1
..0..1..0..0..1....0..1..0..0..1....0..1..0..1..0....1..1..0..1..0

Crossrefs

Cf. A267719.

Sequence in context: A207398 A207699 A207902 * A207746 A207248 A208033

Adjacent sequences: A267710 A267711 A267712 * A267714 A267715 A267716

Keyword

nonn

Author

R. H. Hardin, Jan 19 2016

Status

approved