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A231742
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Number of nX3 0..3 arrays with no element less than a strict majority of its horizontal and vertical neighbors
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1
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16, 318, 4430, 60806, 784076, 9945132, 126926437, 1625269595, 20795246129, 265933115701, 3401419933047, 43511214955897, 556577494538011, 7119285135911590, 91064607669052460, 1164839484230300582
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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 87 (see link above)
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EXAMPLE
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Some solutions for n=4
..3..3..1....1..1..2....3..3..1....0..3..1....1..1..1....1..1..1....1..2..1
..0..0..0....3..1..1....3..0..0....0..0..0....2..1..2....3..2..2....0..0..1
..0..0..0....2..2..1....0..0..0....1..0..0....3..1..1....3..3..2....0..0..2
..1..1..3....2..2..1....0..2..3....2..0..0....0..0..0....0..0..0....1..3..3
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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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