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A206675 Number of (n+1) X 8 0..2 arrays with no 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors or the same number of counterclockwise edge increases as its vertical neighbors. 0
750426, 6474150, 70322310, 700650756, 8557823793, 108434010612, 1530071121621, 22248004177848, 342778375954590, 5376474597787368, 86682713932043619 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A206676.

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4:

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

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

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

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

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

CROSSREFS

Sequence in context: A133979 A352345 A205743 * A205519 A166001 A253374

Adjacent sequences:  A206672 A206673 A206674 * A206676 A206677 A206678

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 11 2012

STATUS

approved

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Last modified August 13 05:18 EDT 2022. Contains 356077 sequences. (Running on oeis4.)