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A219815
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Number of nX7 arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 nX7 array
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0
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28, 91, 1588, 22017, 283334, 3967857, 59065976, 864699568, 12174420630, 164256040933, 2133182509213
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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
..2..1..0..0..0..0..0....0..0..0..0..0..0..0....2..2..2..2..0..0..0
..2..1..1..0..0..0..0....0..0..0..0..0..0..0....2..2..2..2..2..0..0
..2..2..1..1..1..1..0....2..0..0..1..0..0..0....2..2..2..2..2..0..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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