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A205641 Number of (n+1)X8 0..3 arrays with every 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward and upward neighbors. 0
158804736, 13444055224, 4782966551464, 3046981775525932, 2083971490096234516, 1438784646024287898832, 995980221935339574016820, 690272631599920646789218256 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A205642.

LINKS

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

EXAMPLE

Some solutions for n=4:

..3..1..1..2..1..2..3..0....2..3..3..0..3..3..3..1....1..1..2..1..3..1..2..1

..3..2..2..2..0..1..2..2....2..3..0..0..3..0..3..3....1..2..2..1..1..1..2..1

..3..2..0..1..3..0..2..3....2..3..3..3..3..3..3..0....1..1..1..1..2..2..2..1

..2..2..3..0..1..0..2..3....2..2..2..2..2..2..3..3....3..1..0..1..1..1..1..1

..3..0..1..3..1..0..2..3....2..1..1..1..1..2..2..2....1..1..0..0..0..0..0..0

CROSSREFS

Sequence in context: A204605 A289248 A251489 * A118078 A151695 A343079

Adjacent sequences:  A205638 A205639 A205640 * A205642 A205643 A205644

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 29 2012

STATUS

approved

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Last modified January 17 11:29 EST 2022. Contains 350394 sequences. (Running on oeis4.)