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A236078
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Number of (n+1)X(2+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise
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1
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576, 9979, 169680, 2634205, 40097396, 587963980, 8523145663, 121700475056, 1728432778182, 24403460015028, 343787025890344, 4832490504998260, 67872153417285885, 952512927560219600, 13363621591424552478
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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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FORMULA
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Empirical recurrence of order 82 (see link above)
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EXAMPLE
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Some solutions for n=3
..0..0..1....0..0..1....0..0..0....2..0..2....0..1..0....0..1..0....1..0..1
..0..1..1....0..0..2....1..1..0....1..2..1....0..2..0....0..0..0....0..0..1
..1..2..1....1..1..0....0..1..1....0..2..2....2..1..1....1..2..0....0..2..0
..2..1..2....1..1..2....0..1..2....1..1..1....0..1..2....0..2..0....1..1..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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