A206018 Number of (n+1) X 6 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock unequal to the number of counterclockwise edge increases.

189400, 11364568, 729589784, 48253100168, 3222294559864, 216074701653640, 14510530142894840, 975067532289817432, 65537137892387004824, 4405376894671163369304, 296138641779024025159784

Offset

1,1

Comments

Column 5 of A206021.

Links

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

Example

Some solutions for n=3:
..1..1..0..2..1..3....3..1..3..2..2..1....3..3..2..3..0..0....3..3..3..2..1..3
..3..2..3..2..0..3....2..2..3..0..3..1....1..0..2..1..1..2....1..0..1..2..0..3
..0..0..3..1..0..1....0..1..3..2..2..1....1..3..3..3..0..0....1..2..1..3..0..1
..1..2..2..1..2..1....2..2..3..0..3..3....0..0..2..1..1..3....3..2..0..3..2..1

Crossrefs

Sequence in context: A110069 A006028 A257756 * A233873 A256768 A186584

Adjacent sequences: A206015 A206016 A206017 * A206019 A206020 A206021

Keyword

nonn

Author

R. H. Hardin, Feb 02 2012

Status

approved