A188421 Number of (6*n)Xn binary arrays with rows in nonincreasing order, 6 ones in every column and no more than 3 ones in any row.

1, 7, 256, 36659, 15083334, 14100262412, 25784105550034

Offset: 1

Author

R. H. Hardin Mar 30 2011

Keywords

• nonn

Comments

Row 6 of A188416

Examples

			All solutions for 12X2
..1..1....1..1....1..1....1..1....1..0....1..1....1..1
..1..1....1..1....1..1....1..0....1..0....1..1....1..1
..1..1....1..1....1..0....1..0....1..0....1..1....1..1
..1..1....1..1....1..0....1..0....1..0....1..1....1..0
..1..1....1..1....1..0....1..0....1..0....1..0....1..0
..1..1....1..0....1..0....1..0....1..0....1..0....1..0
..0..0....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..1
..0..0....0..0....0..1....0..1....0..1....0..0....0..1
..0..0....0..0....0..1....0..1....0..1....0..0....0..0
..0..0....0..0....0..0....0..1....0..1....0..0....0..0
..0..0....0..0....0..0....0..0....0..1....0..0....0..0