A267793 Number of 7Xn 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.

20, 400, 8000, 102954, 1234716, 13126812, 132388406, 1271314080, 11831791048, 107394660068, 957081246026, 8408442934462, 73058790472446, 629272663467509, 5382292144211926, 45776729662954256, 387532677732355814

Offset: 1

Author

R. H. Hardin, Jan 20 2016

Keywords

• nonn

Comments

Row 7 of A267788.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Cf. A267788.