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A236521
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Number of (n+1)X(6+1) 0..1 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise
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1
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4020, 108214, 2728079, 63997604, 1448355717, 31459840764, 668463714817, 13878535769685, 284431385172713, 5756312538787583, 115657256984698963, 2308624191351314296, 45907689651660537908, 909911916639050545637
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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=2
..1..0..1..0..1..0..1....0..1..0..1..1..1..1....1..0..0..0..0..0..0
..0..1..0..1..0..1..1....0..1..1..0..0..1..0....0..0..0..0..1..0..0
..1..0..1..0..1..1..0....0..1..0..1..1..1..0....0..0..0..0..0..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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