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A206276 Number of (n+1) X 8 0..2 arrays with no 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward or upward neighbors. 1
309057, 408198, 1528920, 6254364, 33297948, 167821686, 964315869, 4586324364, 22656222912, 107944182948, 562553467470, 2820402520110, 14881797312963, 75177032639256, 401169616195323, 2040321270376866, 10870614344272152 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A206277.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4:

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

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

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

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

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

CROSSREFS

Sequence in context: A236818 A234188 A226364 * A251304 A127491 A205204

Adjacent sequences: A206273 A206274 A206275 * A206277 A206278 A206279

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 05 2012

STATUS

approved

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Last modified November 29 08:47 EST 2022. Contains 358422 sequences. (Running on oeis4.)