A205735 Number of (n+1)X8 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.

1112664, 1756446, 14781282, 46226928, 677890656, 2333010360, 34742828298, 121870318920, 1855261787808, 6531492721512, 99358559762784, 350143822343004, 5334771490189698, 18802864726854420, 286439175155582670

Offset

1,1

Comments

Column 7 of A205736.

Links

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

Example

Some solutions for n=4:
..2..0..2..0..0..0..1..0....1..1..2..2..1..1..1..1....1..2..0..2..1..0..0..2
..2..0..2..0..2..0..1..0....2..1..2..0..0..1..2..1....1..2..0..2..1..0..1..1
..0..1..0..1..0..2..0..1....0..2..0..2..1..0..1..0....2..0..2..1..0..1..0..2
..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0....2..0..2..1..0..1..0..1
..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0....0..1..0..2..1..0..2..1

Crossrefs

Sequence in context: A038449 A262498 A257937 * A205916 A205908 A258679

Adjacent sequences: A205732 A205733 A205734 * A205736 A205737 A205738

Keyword

nonn

Author

R. H. Hardin, Jan 30 2012

Status

approved