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

1,1

Comments

Row 5 of A223987

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)

Example

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

Crossrefs

Sequence in context: A328352 A224176 A223868 * A224388 A224021 A042513

Adjacent sequences: A223987 A223988 A223989 * A223991 A223992 A223993

Keyword

nonn

Author

R. H. Hardin Mar 30 2013

Status

approved