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A235738
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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 columnwise and nonincreasing rowwise
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1
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576, 9710, 160075, 2423417, 36199157, 523547651, 7519969703, 106697433668, 1509299904955, 21253277135453, 298927623301734, 4197620035630914, 58919872257393788, 826569038954130084, 11594164564872458891
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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 78 (see link above)
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EXAMPLE
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Some solutions for n=3
..2..0..2....1..1..0....0..1..0....1..1..2....1..0..2....0..0..1....2..0..1
..1..1..0....0..2..0....2..0..2....2..0..2....2..1..2....0..2..1....1..2..0
..2..0..2....1..0..1....0..1..1....0..0..0....0..1..0....1..2..0....0..0..2
..0..1..1....2..2..1....0..0..1....2..2..0....1..1..1....2..0..0....2..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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