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A224112
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Number of nX4 0..3 arrays with row sums and column sums unimodal
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0
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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=3
..0..0..2..2....0..0..1..0....0..2..1..0....0..0..2..2....2..2..3..2
..2..0..3..0....0..2..2..2....2..0..3..0....0..2..3..0....2..2..1..0
..0..2..1..2....2..0..2..2....0..2..1..2....3..3..1..2....0..0..0..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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