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A200772
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Number of nX3 0..2 arrays with every row and column running average 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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2, 5, 13, 31, 77, 217, 553, 1438, 3849, 9634, 24872, 65658, 165619, 425229, 1108871, 2787741, 7090082, 18273124, 45935694, 116433625, 297919225, 747625324, 1886048964, 4791865798, 11998842755, 30184656867, 76352766306, 190890209361
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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..0..0....0..1..1....0..0..1....0..0..1....0..0..1....0..1..1....0..0..2
..0..2..2....0..2..1....0..0..2....0..1..1....0..1..2....0..1..1....0..0..2
..1..1..2....0..2..1....1..2..2....0..2..1....0..1..2....0..2..2....1..1..2
..1..1..2....0..2..2....1..1..2....2..2..2....1..2..2....0..2..2....1..1..2
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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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