A224176 Number of 5Xn 0..3 arrays with rows and antidiagonals unimodal and columns nondecreasing

56, 3136, 87878, 1460836, 16625026, 143558572, 1012166273, 6125081331, 32894121939, 160366617391, 721130521043, 3026020511079, 11954211905590, 44767125938612, 159803658410914, 546205629183576, 1794213349019225

Offset

1,1

Comments

Row 5 of A224173

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

Crossrefs

Sequence in context: A199709 A205227 A328352 * A223868 A223990 A224388

Adjacent sequences: A224173 A224174 A224175 * A224177 A224178 A224179

Keyword

nonn

Author

R. H. Hardin Mar 31 2013

Status

approved