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A235554
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Number of (n+1)X(6+1) 0..1 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing rowwise and columnwise
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1
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1456, 27731, 892122, 33823017, 1271453587, 42883865335, 1280647786349, 33729294480195, 795966494233835, 16970688538136080, 331653138682479109, 5983009714922825733, 100686031573770031924, 1588391516232506517066
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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
..0..1..0..1..1..0..1....0..1..1..1..1..1..0....0..1..1..1..0..1..0
..1..0..1..0..0..0..0....1..1..0..1..0..0..1....1..1..0..0..0..0..0
..0..1..0..1..0..1..0....0..1..1..0..0..0..0....1..0..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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