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A201275
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Number of nX6 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other
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1
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1, 9, 41, 143, 442, 1260, 3113, 7331, 15969, 32737, 63942, 120318, 216392, 377902, 640970, 1055829, 1699241, 2679576, 4132842, 6267048, 9345121, 13712218, 19841970, 28343579, 39963063, 55722233, 76873873, 104958237, 141966994
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OFFSET
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1,2
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COMMENTS
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Column 6 of A201277
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..101
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EXAMPLE
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Some solutions for n=5
..0..0..0..0..0..0....0..0..0..1..1..1....0..0..0..0..0..0....0..0..0..0..1..1
..0..0..1..1..1..1....0..0..0..1..1..1....0..0..0..1..1..1....0..0..0..1..1..1
..0..1..1..1..2..2....0..0..1..1..1..1....0..1..1..1..1..2....0..1..1..1..1..2
..0..1..1..1..2..2....0..2..2..2..2..2....1..1..1..2..2..2....0..1..2..2..2..2
..2..2..2..2..2..2....0..2..2..2..2..2....2..2..2..2..2..2....0..2..2..2..2..2
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CROSSREFS
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Sequence in context: A001846 A271663 A034441 * A056243 A083584 A276780
Adjacent sequences: A201272 A201273 A201274 * A201276 A201277 A201278
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Nov 29 2011
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STATUS
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approved
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