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A205743 Number of 8X(n+1) 0..2 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
750426, 370008, 2500875, 25898472, 272838012, 3069752670, 34742828298, 413012966010, 4930601123670, 61216679299698, 763397221836603, 9815569401346974, 126753075111195354, 1674419143328404032 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A205736.

LINKS

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

EXAMPLE

Some solutions for n=4:

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A339105 A133979 A352345 * A206675 A205519 A166001

Adjacent sequences: A205740 A205741 A205742 * A205744 A205745 A205746

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 2012

STATUS

approved

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Last modified January 31 00:50 EST 2023. Contains 359947 sequences. (Running on oeis4.)