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A206086 Number of (n+1) X (n+1) 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases. 1
81, 780, 4560, 48816, 516912, 10584000, 408445632, 17222950080, 1397673066240, 214644729219840, 36193471662355200, 11735368648637414400, 7204350072147674803200, 4859051673972177459072000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A206094.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..20

EXAMPLE

Some solutions for n=4:

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

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

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

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

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

CROSSREFS

Sequence in context: A295233 A271829 A066431 * A356534 A224002 A253461

Adjacent sequences: A206083 A206084 A206085 * A206087 A206088 A206089

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 03 2012

STATUS

approved

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Last modified February 9 04:00 EST 2023. Contains 360153 sequences. (Running on oeis4.)