A206664 Number of (n+1) X 5 0..2 arrays with every 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward and upward neighbors.

12477, 119727, 1637151, 25229685, 404408697, 6593653335, 108688211619, 1799150533260, 29878961439630, 496855658151597, 8271315187974831, 137759633224044003, 2295322855995816864, 38251083002490384138

Offset

1,1

Comments

Column 4 of A206668.

Links

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

Example

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

Crossrefs

Sequence in context: A237901 A234127 A272132 * A033669 A203345 A232104

Adjacent sequences: A206661 A206662 A206663 * A206665 A206666 A206667

Keyword

nonn

Author

R. H. Hardin, Feb 11 2012

Status

approved