A203053 Number of nX4 0..5 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor

161, 177290, 125838722, 78243755382, 50221974160730, 32577032228308750, 21056749683696452598, 13600371239866122117034, 8787864979191134277097374, 5678542289359508570256255314, 3669202681086636879838661622572

Offset

1,1

Comments

Column 4 of A203057

Links

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

Example

Some solutions for n=5
..2..1..3..2....1..5..0..0....0..3..2..4....5..4..0..2....5..3..3..3
..5..3..3..5....3..5..3..4....2..5..4..4....5..5..5..4....5..0..0..3
..5..0..1..5....3..1..0..4....1..5..2..3....1..0..1..1....0..4..0..3
..3..5..3..2....5..4..0..3....5..1..4..5....3..3..5..3....5..4..5..4
..2..5..0..2....5..0..2..2....5..5..4..5....3..5..5..3....5..1..5..0

Crossrefs

Sequence in context: A272355 A278891 A232294 * A232367 A232308 A232458

Adjacent sequences: A203050 A203051 A203052 * A203054 A203055 A203056

Keyword

nonn

Author

R. H. Hardin Dec 28 2011

Status

approved