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A235587
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Number of (n+1)X(4+1) 0..2 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise
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1
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20537, 1660676, 140378037, 11284713813, 864122401640, 61249068090242, 4044723177106236, 249130316102719498, 14439907606618894372, 792686015022473183671, 41515305615658138540805, 2086726767803908921050863
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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..2..2..2....2..1..0..2..2....1..0..1..2..2....2..1..1..2..2
..2..2..1..0..1....1..2..0..1..0....2..2..2..0..0....1..1..0..1..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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