A224122 Number of nX4 0..3 arrays with row sums nondecreasing and column sums unimodal.

130, 16782, 1703178, 145901795, 11066001160, 766386005577, 49489265853382, 3023718149469925, 176685707320506238, 9953671018445272136

Offset: 1

Author

R. H. Hardin Mar 31 2013

Keywords

• nonn

Comments

Column 4 of A224123

Examples

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