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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
OFFSET
1,1
COMMENTS
Row 7 of A205736.
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 30 2012
STATUS
approved