A200530 Number of nX4 0..2 arrays with every row and column running average nondecreasing rightwards and downwards.

19, 146, 905, 4848, 23925, 111085, 494555, 2132979, 8981773, 37125420, 151253915, 609247412, 2432002859, 9638730963, 37983584772, 149003379789, 582403346152, 2269881052166, 8826625108206, 34261690527204, 132805131519232

Offset: 1

Author

R. H. Hardin Nov 18 2011

Keywords

• nonn

Comments

Column 4 of A200534

Examples

			Some solutions for n=5
..0..0..0..1....0..0..0..2....0..0..0..0....0..0..0..1....0..1..1..1
..1..1..2..2....0..0..0..2....0..0..0..2....0..0..0..2....1..2..2..2
..2..2..2..2....0..0..1..2....0..1..1..2....1..1..2..2....1..2..2..2
..2..2..2..2....1..2..2..2....0..2..1..2....1..2..2..2....1..2..2..2
..2..2..2..2....1..1..1..2....0..2..1..2....2..2..2..2....2..2..2..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..57