A224044 Number of n X n 0..3 arrays with rows and columns unimodal and antidiagonals nondecreasing.

4, 160, 9731, 638996, 41991129, 2701569493, 169750613182, 10454910167463, 634179969235617, 38050532050437859

Offset: 1

Author

R. H. Hardin Apr 01 2013

Keywords

• nonn

Comments

Diagonal of A224050

Examples

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