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A207042
Number of (n+1) X (n+1) 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly one clockwise edge increases.
1
81, 270, 750, 2244, 4944, 11712, 35904, 79104, 187392, 574464, 1265664, 2998272, 9191424, 20250624, 47972352, 147062784, 324009984, 767557632, 2353004544, 5184159744, 12280922112, 37648072704, 82946555904, 196494753792
OFFSET
1,1
COMMENTS
Diagonal of A207050.
LINKS
EXAMPLE
Some solutions for n=4
..2..0..0..1..1....2..2..0..0..0....0..0..1..1..0....1..2..2..2..1
..2..0..0..0..1....2..2..2..0..0....0..1..1..1..2....2..2..2..0..0
..2..2..0..0..0....1..2..2..2..0....1..1..1..2..2....2..2..0..0..0
..2..2..2..0..0....1..1..2..2..2....1..1..2..2..2....2..0..0..0..2
..0..2..2..2..0....1..1..1..2..2....1..2..2..2..1....2..0..0..2..2
CROSSREFS
Cf. A207050.
Sequence in context: A237227 A206094 A202333 * A206087 A236809 A236802
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 14 2012
STATUS
approved