A224347 Number of n X n 0..2 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.

3, 36, 788, 19608, 495985, 12340932, 300892325, 7202270426, 169987960308, 3972599259664, 92292550974356

Offset: 1

Author

R. H. Hardin Apr 04 2013

Keywords

• nonn

Comments

Diagonal of A224353

Examples

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