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A223045
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Number of nX2 0..2 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope
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2
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6, 20, 120, 536, 3378, 17362, 108534, 597935, 3721248, 21071310, 130311096, 750104699, 4613728254, 26815009916, 164248964064, 960731599727, 5866192543680, 34466973845193, 209936262159534, 1237576209559222
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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..1....0..0....0..1....1..2....0..1....0..0....0..0....0..0....2..2....1..1
..0..2....0..1....0..1....0..1....2..2....0..1....0..2....0..1....2..2....2..2
..2..2....1..2....2..2....1..2....0..2....2..2....0..1....0..1....2..2....1..1
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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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