A224126 Number of 4Xn 0..3 arrays with row sums nondecreasing and column sums unimodal.

35, 6627, 1070499, 145901795, 17292618579, 1830213565657, 176495247198733, 15745932467829042, 1315113237261820410, 103796589850715007818

Offset: 1

Author

R. H. Hardin Mar 31 2013

Keywords

• nonn

Comments

Row 4 of A224123

Examples

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