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A223960
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Number of nX7 0..3 arrays with antidiagonals unimodal and rows and diagonals nondecreasing
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1
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120, 7470, 217144, 4500818, 85350934, 1629022329, 31770135236, 629825651180, 12620835427126, 254719515611821, 5165793380135728, 105110696722615853, 2143594088287821599, 43784293043682987873, 895295525455930993505
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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..0..0..2..3..3....0..0..0..0..0..2..2....0..0..0..0..0..1..2
..0..1..1..1..2..3..3....0..0..1..1..2..2..2....0..0..1..2..2..2..3
..0..0..1..1..1..3..3....0..2..2..2..2..2..3....0..0..1..2..2..3..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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