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A235411
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Number of (n+1)X(6+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise
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1
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1482, 21707, 397340, 7379380, 145005714, 2573684600, 48150637857, 775525688659, 13190905086499, 190687328015653, 2907739241384590, 37858518417810848, 519021821368183677, 6140452349020498860, 76333242984438248154
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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..0..0..1....1..1..1..0..0..0..0....1..1..1..0..0..0..0
..1..1..1..1..1..0..0....0..1..0..1..1..1..0....1..1..1..1..1..1..1
..0..1..0..1..0..0..1....1..1..1..1..0..0..1....1..1..1..1..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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