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A235572
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Number of (n+1)X(7+1) 0..1 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise
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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=1
..1..1..1..1..1..1..1..0....0..0..0..0..0..0..1..0....0..0..0..0..1..1..1..1
..1..0..1..1..0..0..0..1....1..0..0..1..0..0..0..0....0..0..0..1..1..1..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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