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A205664 Number of 7X(n+1) 0..3 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors. 1
10876432, 23019504, 142040528, 3024213232, 88431310744, 2994560119488, 106351019923768, 3947775200832256, 149503185538394128, 5763112909967382456, 223893620074913870560, 8755461346870905553088, 343348919507562739830432 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A205659.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

EXAMPLE

Some solutions for n=4:

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A214245 A233621 A151909 * A205953 A205464 A202470

Adjacent sequences:  A205661 A205662 A205663 * A205665 A205666 A205667

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 2012

STATUS

approved

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Last modified June 28 00:25 EDT 2022. Contains 354903 sequences. (Running on oeis4.)