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A183549 Number of nX4 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors 1
9, 299, 5287, 95101, 1728533, 31363527, 569461759, 10339213765, 187720469393, 3408294462361, 61881741606489, 1123538699592837, 20399220213631985, 370372813824090515, 6724571832069212589, 122092833670153549855 (list; graph; refs; listen; history; text; internal format)
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

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Last modified February 24 22:57 EST 2020. Contains 332216 sequences. (Running on oeis4.)