A201214 Number of nX6 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

233, 12314, 512681, 18624423, 638359663, 21062625664, 671706552402, 20756983300265, 624562355419649, 18382517638082006, 531236200468061769, 15113072656159194185, 424027010031462876498

Offset: 1

Author

R. H. Hardin Nov 28 2011

Keywords

• nonn

Comments

Column 6 of A201216

Examples

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