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A266079
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Number of nX6 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one.
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1
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2, 4, 12, 26, 29, 78, 146, 364, 783, 1773, 4170, 9548, 21795, 50340, 116807, 269080, 621237, 1433845, 3314057, 7645131, 17658119, 40801550, 94240870, 217596976, 502694842, 1161236323, 2681811462, 6194408530, 14310237182, 33054393201
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..0..0..0..0..0....0..0..0..0..0..0....1..1..2..2..1..1....2..1..1..2..0..0
..0..0..0..2..3..2....0..2..3..2..0..0....2..1..1..1..1..2....1..1..1..3..2..0
..0..0..0..3..4..3....0..3..4..3..0..0....2..1..1..1..1..2....1..2..2..2..3..2
..0..0..0..2..3..2....0..2..3..2..0..0....1..1..2..2..1..1....1..2..3..2..1..1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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