A200773 Number of nX4 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

7, 20, 31, 342, 1368, 1806, 18801, 66784, 80772, 855668, 3041384, 3594128, 37388832, 130414591, 152057520, 1585602417, 5503438740, 6353866245, 65731117389, 226849040721, 260912168378, 2698875915314, 9278417689608, 10609858568929

Offset: 1

Author

R. H. Hardin Nov 22 2011

Keywords

• nonn

Comments

Column 4 of A200777

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..43