A183549 Number of nX4 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors

9, 299, 5287, 95101, 1728533, 31363527, 569461759, 10339213765, 187720469393, 3408294462361, 61881741606489, 1123538699592837, 20399220213631985, 370372813824090515, 6724571832069212589, 122092833670153549855

Offset

1,1

Comments

Column 4 of A183554

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3X4
..2..0..0..0....1..1..1..1....0..0..0..1....1..1..0..0....2..2..2..0
..2..2..0..1....0..1..1..1....2..2..0..1....1..1..0..2....1..2..2..0
..2..0..0..1....0..1..0..0....2..2..0..0....0..0..2..2....1..1..2..2

Crossrefs

Sequence in context: A211077 A211082 A061685 * A104775 A106663 A196694

Adjacent sequences: A183546 A183547 A183548 * A183550 A183551 A183552

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved