A206665 Number of (n+1) X 6 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.

68253, 815847, 16537155, 404408697, 10351091007, 269149632948, 7050554283159, 185345018259540, 4881926323170807, 128725692827947026, 3396388515566281998, 89646186585961013220, 2366709977280568630851, 62491059857755655009379

Offset

1,1

Comments

Column 5 of A206668.

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..2..0..2..0..1....0..2..0..0..1..2....2..0..1..0..0..0
..1..2..1..2..0..0....1..0..1..0..1..0....0..2..2..0..1..1....2..0..0..0..1..0
..0..2..1..2..0..1....2..1..0..1..0..1....2..2..0..0..1..2....2..2..2..0..1..1
..2..2..2..2..0..1....1..0..1..2..1..2....0..2..2..0..1..1....0..0..2..0..0..0
..2..0..2..0..0..1....2..1..2..0..2..1....0..2..0..0..1..0....0..2..2..0..2..2

Crossrefs

Sequence in context: A250924 A206193 A209855 * A206174 A205428 A205203

Adjacent sequences: A206662 A206663 A206664 * A206666 A206667 A206668

Keyword

nonn

Author

R. H. Hardin, Feb 11 2012

Status

approved