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A219703
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Number of nX7 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 nX7 array
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1
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7, 13, 130, 841, 5007, 28224, 154731, 826518, 4288588, 21496147, 103865903, 483620093, 2171516102, 9418135296, 39537186771, 160971906106, 636743750790, 2450940686185, 9193416697296, 33648849380395, 120320823328471
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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..1..1..1..1....0..0..0..0..0..0..1....0..0..0..0..0..0..1
..0..0..0..0..1..1..1....0..0..0..0..0..0..1....0..0..0..0..0..0..1
..0..0..0..0..1..1..1....1..1..0..0..0..1..1....0..1..1..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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