A223990 Number of 5Xn 0..3 arrays with rows unimodal and columns nondecreasing.

56, 3136, 99634, 2086196, 31831914, 378122264, 3661410444, 29889154034, 211009204916, 1314178222276, 7336228725354, 37185201981670, 172974779780114, 745060738789758, 2994209711354545, 11299608627412727, 40267814207071512

Offset: 1

Author

R. H. Hardin Mar 30 2013

Keywords

• nonn

Comments

Row 5 of A223987

Examples

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

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)