A250450 Number of (n+1)X(4+1) 0..2 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction

4535, 141857, 3865967, 104578590, 2750712613, 71984404630, 1868402502223, 48446319776685, 1253388924506698, 32426207385598948, 838397988936401847, 21678843535834780799, 560468876574353975606, 14490586947154204948722

Offset

1,1

Comments

Column 4 of A250454

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 50

Formula

Empirical recurrence of order 50 (see link above)

Example

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

Crossrefs

Sequence in context: A104845 A235852 A138731 * A339795 A337314 A234171

Adjacent sequences: A250447 A250448 A250449 * A250451 A250452 A250453

Keyword

nonn

Author

R. H. Hardin, Nov 23 2014

Status

approved