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A205952
Number of (n+1) X 6 0..3 arrays with no 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors or the same number of counterclockwise edge increases as its vertical neighbors.
0
1285076, 47118720, 1912957100, 90234357280, 4762415402596, 273204243466080
OFFSET
1,1
COMMENTS
Column 5 of A205954.
EXAMPLE
Some solutions for n=4:
..1..3..1..0..0..3....2..2..2..2..3..2....0..2..0..3..0..2....2..2..1..2..0..0
..0..3..3..1..2..0....2..0..3..2..1..1....0..3..3..2..1..2....1..0..0..2..0..0
..2..0..2..1..1..0....2..3..0..0..2..1....0..1..0..1..2..2....3..2..2..3..3..1
..1..0..0..2..3..1....0..3..0..0..0..3....2..1..3..2..2..2....3..2..2..0..0..2
..2..1..3..3..3..2....0..1..2..0..0..3....3..0..0..2..2..1....0..3..3..1..3..3
CROSSREFS
Sequence in context: A091291 A205178 A205663 * A205463 A247583 A206749
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 02 2012
STATUS
approved