A206274 Number of (n+1) X 6 0..2 arrays with no 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward or upward neighbors.

19509, 35922, 133866, 495858, 2243139, 8405508, 33297948, 125846844, 520171458, 2032882188, 8441030760, 32995135068, 137694091206, 538836368046, 2242526518020, 8781930040704, 36621430354950, 143540058923604

Offset

1,1

Comments

Column 5 of A206277.

Links

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

Example

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

Crossrefs

Sequence in context: A345575 A345831 A322101 * A033869 A031801 A022213

Adjacent sequences: A206271 A206272 A206273 * A206275 A206276 A206277

Keyword

nonn

Author

R. H. Hardin, Feb 05 2012

Status

approved