A224056 Number of nX7 0..2 arrays with rows and columns unimodal and antidiagonals nondecreasing.

239, 10511, 164781, 1442005, 9064541, 46853641, 212819499, 880290006, 3395883003, 12434367863, 43748614669, 149023329961, 493368821453, 1589792417862, 4986883506257, 15223339574692, 45212829646621

Offset: 1

Author

R. H. Hardin Mar 30 2013

Keywords

• nonn

Comments

Column 7 of A224057

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..58
• R. H. Hardin, Empirical polynomial of degree 28

Formula

Empirical polynomial of degree 28 (see link above)