A224207 Number of 5Xn 0..3 arrays with rows unimodal and antidiagonals nondecreasing.

1024, 160000, 4357084, 54177872, 451319098, 2981774784, 17178450136, 91585310015, 466549088803, 2294426837986, 10864811370660, 49206477503159, 211954893113813, 865842155983471, 3352909875833504, 12323194613924281

Offset: 1

Author

R. H. Hardin Apr 01 2013

Keywords

• nonn

Comments

Row 5 of A224204

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..2....2..2..0....2..2..0....2..0..0....2..2..1....0..2..0....0..0..2
..1..2..0....2..0..0....3..3..0....3..3..3....2..2..0....2..2..2....0..2..1
..3..2..0....0..0..0....3..1..0....3..3..0....3..2..0....2..2..1....3..2..1
..2..0..0....3..3..3....2..1..1....3..0..0....3..2..0....3..3..2....2..2..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical polynomial of degree 30

Formula

Empirical polynomial of degree 30 (see link above)