A188412 Number of (5*n)X5 binary arrays with rows in nonincreasing order, n ones in every column and no more than 3 ones in any row.

46, 1308, 21965, 252493, 2181522, 15083334, 87171345, 434626896, 1914365683, 7586544223, 27443717856, 91677539685, 285511159634, 835479072942, 2312389036003, 6087264779565, 15314086591293, 36970334246131

Offset: 1

Author

R. H. Hardin Mar 30 2011

Keywords

• nonn

Comments

Column 5 of A188416

Examples

			Some solutions for 10X5
..1..1..0..0..0....1..0..0..0..0....1..1..0..0..0....1..0..1..0..0
..1..0..0..0..0....1..0..0..0..0....1..0..1..1..0....1..0..0..1..1
..0..1..0..1..1....0..1..1..1..0....0..1..0..0..0....0..1..0..0..0
..0..0..1..0..0....0..1..1..1..0....0..0..1..0..1....0..1..0..0..0
..0..0..1..0..0....0..0..0..0..1....0..0..0..1..0....0..0..1..0..0
..0..0..0..1..1....0..0..0..0..1....0..0..0..0..1....0..0..0..1..0
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..1
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..19