A224048 Number of nX6 0..3 arrays with rows and columns unimodal and antidiagonals nondecreasing.

610, 59792, 1801402, 28403642, 310514900, 2701569493, 20096076442, 133729094355, 821109158656, 4743773544158, 26052580835518, 136551839375912, 683560425650120, 3267176210453459, 14908991892646144, 64985125266087385

Offset: 1

Author

R. H. Hardin Apr 01 2013

Keywords

• nonn

Comments

Column 6 of A224050

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..34