A267248 Number of 5Xn binary arrays with row sums nondecreasing and columns lexicographically nondecreasing.

6, 63, 486, 3351, 20040, 107015, 516084, 2278687, 9303052, 35428544, 126753732, 428651446, 1377310514, 4223642819, 12409437728, 35050866249, 95459908872, 251341796912, 641282264972, 1588863292072

Offset: 1

Author

R. H. Hardin, Jan 12 2016

Keywords

• nonn

Comments

Row 5 of A267245.

Examples

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

Crossrefs

Cf. A267245.