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A235777
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Number of (n+1)X(2+1) 0..3 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise
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1
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2612, 68942, 1581879, 30969609, 545929374, 8741113000, 130024832317, 1814248350284, 24045049867402, 304974560820729, 3731440079988996, 44289621774986740, 512802242862242358, 5816732007527994942
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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..3..1....2..0..3....3..0..0....2..1..2....3..1..3....1..2..1....1..0..0
..3..2..1....2..0..0....0..2..0....0..3..1....2..1..1....2..0..0....2..2..2
..2..0..0....1..2..1....1..3..3....2..1..3....0..1..3....2..3..2....1..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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