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A235732
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Number of (n+1)X(4+1) 0..1 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise
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1
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746, 15963, 337412, 7041734, 146785037, 3054397001, 63554803821, 1322113787590, 27503978998503, 572147678579818, 11902082913813364, 247591529985854808, 5150496436912541860, 107142578702763898163, 2228821011220833912388
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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 86 (see link above)
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EXAMPLE
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Some solutions for n=2
..0..0..0..1..0....0..0..0..1..1....0..0..1..0..0....0..0..0..1..0
..1..1..0..1..1....0..1..0..1..0....1..1..1..0..1....0..1..0..1..1
..0..0..1..1..0....0..0..1..1..0....0..0..0..0..0....0..1..1..0..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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