A188422 Number of (7*n)Xn binary arrays with rows in nonincreasing order, 7 ones in every column and no more than 3 ones in any row.

1, 8, 410, 101829, 87171345, 197263686098, 990154499577167

Offset: 1

Author

R. H. Hardin Mar 30 2011

Keywords

• nonn

Comments

Row 7 of A188416

Examples

			All solutions for 14X2
..1..1....1..1....1..1....1..1....1..1....1..1....1..0....1..1
..1..1....1..1....1..0....1..1....1..1....1..1....1..0....1..1
..1..0....1..1....1..0....1..1....1..1....1..1....1..0....1..1
..1..0....1..1....1..0....1..1....1..1....1..0....1..0....1..1
..1..0....1..1....1..0....1..1....1..1....1..0....1..0....1..0
..1..0....1..0....1..0....1..1....1..1....1..0....1..0....1..0
..1..0....1..0....1..0....1..1....1..0....1..0....1..0....1..0
..0..1....0..1....0..1....0..0....0..1....0..1....0..1....0..1
..0..1....0..1....0..1....0..0....0..0....0..1....0..1....0..1
..0..1....0..0....0..1....0..0....0..0....0..1....0..1....0..1
..0..1....0..0....0..1....0..0....0..0....0..1....0..1....0..0
..0..1....0..0....0..1....0..0....0..0....0..0....0..1....0..0
..0..0....0..0....0..1....0..0....0..0....0..0....0..1....0..0
..0..0....0..0....0..0....0..0....0..0....0..0....0..1....0..0