A224111 Number of nX3 0..3 arrays with row sums and column sums unimodal.

50, 3060, 141112, 5286827, 169786856, 4837645361, 125243425246, 2997702534361, 67199044773027, 1425028874634334, 28814020738905085, 559067607301700698, 10463117115709609406, 189698093216997989976, 3343758094368043618098

Offset: 1

Author

R. H. Hardin Mar 31 2013

Keywords

• nonn

Comments

Column 3 of A224113

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..32