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A212945
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Number of 3Xn 0..n-1 arrays with no column j greater than or equal to than column j-1 in all rows
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1
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1, 37, 9019, 6470341, 10058484751, 28744943858947, 135992452878101359, 989783189762563737541, 10495013926448689085587447, 155433527883236057504375249287, 3109085470816411449764436167502547
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..2..1..2..3....2..2..0..2....1..1..2..0....1..0..3..2....1..0..0..3
..0..1..2..0....2..1..1..0....2..2..1..0....2..1..2..1....0..0..1..1
..0..1..0..2....1..1..2..2....3..2..2..0....1..3..2..0....1..3..1..0
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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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