A201228 Number of n X n 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.

4, 2, 114, 1028, 420662, 33222962, 112920979339

Offset: 1

Author

R. H. Hardin Nov 28 2011

Keywords

• nonn

Comments

Diagonal of A201235

Examples

			Some solutions for n=4
..0..0..1..1....0..0..0..1....0..0..0..0....0..0..0..1....0..0..0..0
..0..2..1..1....0..1..2..1....1..1..2..3....0..1..3..3....1..1..1..2
..0..3..3..2....2..2..3..3....1..2..3..3....1..2..3..2....1..2..3..2
..2..2..3..3....1..3..2..3....1..3..2..2....1..2..2..3....2..3..3..3