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A200852
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Number of nX2 0..4 arrays with every row and column running average nondecreasing rightwards and downwards
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1
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15, 105, 647, 3728, 20656, 111222, 586908, 3047226, 15620118, 79228317, 398364306, 1988133262, 9858922561, 48617189158, 238575216150, 1165684780558, 5673701149975, 27520684819357, 133080240201400, 641746039540686
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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=3
..1..3....0..1....0..0....0..3....0..3....0..0....0..1....0..2....1..1....0..0
..1..4....0..1....2..3....0..3....2..3....1..4....0..3....2..2....3..3....1..4
..4..4....0..1....3..4....3..3....4..4....1..3....3..4....2..4....3..4....4..4
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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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