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A200709
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Number of n X 3 0..7 arrays with every row and column running average nondecreasing rightwards and downwards.
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1
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154, 7370, 317656, 12904303, 501622631, 18836416881, 688892422045, 24679562321720, 870010030574894, 30274045926194001, 1042315568516067529, 35569907932628823872, 1204745819326637993000, 40540325062931324645529
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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=4
..0..4..7....0..0..3....0..0..1....0..0..1....0..0..0....0..2..2....0..2..2
..0..4..7....0..0..5....0..4..3....0..0..4....0..2..1....0..2..7....0..4..7
..0..6..7....0..4..6....0..2..3....0..0..5....0..4..3....0..4..6....0..4..7
..1..6..7....0..3..7....0..5..3....2..2..7....0..5..4....0..4..5....0..6..6
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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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