A266932 Number of nX5 binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing.

2, 5, 14, 52, 210, 871, 3566, 13899, 50841, 173470, 553021, 1652621, 4652572, 12400392, 31443461, 76188169, 177120011, 396481264, 857322183, 1795814448, 3653191802, 7233526075, 13969016501, 26357103244, 48668165412, 88071764221

Offset: 1

Author

R. H. Hardin, Jan 06 2016

Keywords

• nonn

Comments

Column 5 of A266935.

Examples

			Some solutions for n=4
..0..0..0..1..1....0..0..0..0..1....0..0..0..0..0....0..0..0..0..1
..0..0..1..0..1....0..0..0..0..1....0..0..0..0..0....0..0..1..1..0
..1..1..0..1..0....1..1..1..1..0....0..0..0..0..0....1..1..0..0..1
..1..1..1..0..0....1..1..1..1..0....1..1..1..1..1....1..1..1..1..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..34

Crossrefs

Cf. A266935.