A224396 Number of 7Xn 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.

16384, 10000000, 279128617, 2780848289, 17642791909, 90682660877, 424124440444, 1895527656502, 8186764103582, 33998418651060, 134714450368164, 506671733476920, 1805110329656189, 6093246282673576, 19519515186829602

Offset: 1

Author

R. H. Hardin Apr 05 2013

Keywords

• nonn

Comments

Row 7 of A224391

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..23