A206684 Number of (n+1) X 8 0..2 arrays with every 2 X 3 or 3 X 2 subblock having an unequal number of clockwise and counterclockwise edge increases.

422016, 10300608, 373903296, 11019153780, 401233408020, 11814420790656, 430502655386142, 12617309045283948, 458475690005909256, 13442826543270192528, 488345209526432269122, 14319618461612628650220

Offset

1,1

Comments

Column 7 of A206685.

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

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

Crossrefs

Sequence in context: A164729 A164730 A084734 * A202405 A264764 A130022

Adjacent sequences: A206681 A206682 A206683 * A206685 A206686 A206687

Keyword

nonn

Author

R. H. Hardin, Feb 11 2012

Status

approved