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A183546 Number of n X n 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors 0
0, 15, 583, 95101, 63868351, 177385265619, 2043774880960645, 97587614786720584857 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A183554

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for 3X3

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

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

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

CROSSREFS

Sequence in context: A027534 A001236 A263887 * A179895 A232291 A294834

Adjacent sequences:  A183543 A183544 A183545 * A183547 A183548 A183549

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 05 2011

STATUS

approved

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Last modified April 21 10:55 EDT 2019. Contains 322328 sequences. (Running on oeis4.)