A184142 Number of nX7 binary arrays with rows and columns in nondecreasing order.

8, 92, 1682, 42305, 1202234, 33345183, 836488618, 18470742266, 358194085968, 6148026957098, 94402700488339, 1310734458313359, 16616390002366515, 193963806947349704, 2100034143080950846, 21221195503865955621

Offset: 1

Author

R. H. Hardin Jan 09 2011

Keywords

• nonn

Comments

Column 7 of A180985

Examples

			Some solutions for 3X7
..0..0..0..0..0..0..1....0..0..0..0..0..1..1....0..0..1..1..1..1..1
..0..1..1..1..1..1..1....0..0..0..0..0..1..1....0..1..0..0..0..1..1
..1..0..0..0..1..1..1....0..1..1..1..1..0..0....1..1..1..1..1..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..200