A202557 Number of nX5 0,1 arrays with the row and column sums nondecreasing.

6, 73, 824, 9325, 103806, 1126437, 12176148, 130217215, 1384437590, 14638759530, 153859811582, 1612968122563, 16850540584514, 175613681682972, 1826081927556004, 18940152569016323, 196169872012941802

Offset: 1

Author

R. H. Hardin Dec 21 2011

Keywords

• nonn

Comments

Column 5 of A202560

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..24