A224178 Number of 7 X n 0..3 arrays with rows, diagonals and antidiagonals unimodal and columns nondecreasing.

120, 14400, 794220, 24197608, 468021427, 6360047093, 65713691148, 549557637814, 3906417081652, 24494943831322, 139244456386154, 731876847737254, 3607100658268390, 16837953991281924

Offset: 1

Author

R. H. Hardin, Mar 31 2013

Keywords

• nonn

Examples

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

Crossrefs

Row 7 of A224173.

Extensions

Name corrected by Andrew Howroyd, Mar 18 2025