A201231 Number of nX4 0..3 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.

3, 24, 140, 1028, 7791, 66027, 508368, 4293464, 33177954, 282310785, 2226471492, 18845872240, 149352193586, 1252800269866, 9919439949887, 82782378005253, 656171911832714, 5446960364973500, 43213785216715427, 357463895275500826

Offset: 1

Author

R. H. Hardin Nov 28 2011

Keywords

• nonn

Comments

Column 4 of A201235

Examples

			Some solutions for n=6
..0..0..0..0....0..0..0..1....0..0..0..1....0..0..0..0....0..0..0..0
..0..1..2..1....0..1..1..1....0..0..0..2....0..1..1..1....0..0..3..1
..0..1..2..3....0..3..3..2....1..1..1..2....0..3..2..3....2..2..2..3
..1..1..3..2....0..3..2..2....1..3..2..3....1..3..2..2....1..2..3..2
..3..3..3..3....1..3..2..2....1..2..3..2....1..3..2..2....1..1..3..2
..1..2..2..2....1..3..2..3....2..3..3..3....1..3..2..3....1..1..3..3
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..23