A205822 Number of (n+1) X 8 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock unequal to the number of counterclockwise edge increases.

10032, 96402, 1002240, 12281976, 156410676, 2053746000, 27196042704, 362290015758, 4834444163676, 64590005130132, 863239060201212, 11540056054532778, 154281470426981232, 2062735520293913052

Offset

1,1

Comments

Column 7 of A205823.

Links

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

Example

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

Crossrefs

Sequence in context: A213319 A241880 A245209 * A251136 A213318 A346026

Adjacent sequences: A205819 A205820 A205821 * A205823 A205824 A205825

Keyword

nonn

Author

R. H. Hardin, Feb 01 2012

Status

approved