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.

750426, 370008, 2500875, 25898472, 272838012, 3069752670, 34742828298, 413012966010, 4930601123670, 61216679299698, 763397221836603, 9815569401346974, 126753075111195354, 1674419143328404032

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