A202559 Number of nX7 0,1 arrays with the row and column sums nondecreasing.

8, 293, 9520, 342295, 12176148, 436020774, 15635171834, 557315843073, 19890838348436, 707996212911950, 25194289287709052

Offset: 1

Author

R. H. Hardin Dec 21 2011

Keywords

• nonn

Comments

Column 7 of A202560

Examples

			Some solutions for n=3
..0..1..0..0..1..0..0....0..0..0..0..1..0..0....0..0..1..0..1..0..1
..1..0..0..0..1..1..1....0..0..0..1..0..0..0....0..1..0..1..1..1..0
..0..0..1..1..0..1..1....0..1..1..0..0..1..1....1..1..1..1..0..1..1