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A205951
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Number of (n+1) X 5 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.
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1
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151824, 3825072, 101702648, 2938041784, 90234357280, 2915195222352, 97376756715048, 3323115063194944, 114956621013901728, 4009974857113714304, 140592681593832370928, 4944437367755630155480, 174211885766255474821936
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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:
..3..0..0..3..1....3..3..2..1..0....1..1..2..1..1....0..2..1..0..1
..3..3..2..2..1....1..0..1..2..0....2..1..3..3..2....0..3..3..1..1
..3..3..0..3..3....3..3..2..2..1....1..2..2..1..1....0..2..1..1..1
..0..3..1..1..0....0..0..3..0..2....1..2..2..3..2....3..3..1..1..2
..2..0..0..3..3....0..0..3..2..2....3..0..0..0..0....3..3..2..2..3
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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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