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A222843
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Number of (n+1)X2 0..2 arrays with every row and column least squares fitting to a positive slope straight line
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2
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1, 3, 16, 48, 185, 534, 1873, 5397, 17853, 51516, 165882, 480321, 1519997, 4419336, 13827716, 40372992, 125335640, 367166796, 1133563870, 3330422526, 10238553681, 30154137624, 92399944682, 272682432123, 833404227103, 2463640724667
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..0..2....0..1....0..1....0..1....0..2....0..1....0..1....0..1....0..1....0..2
..0..1....0..2....1..2....0..2....0..1....0..1....1..2....0..1....0..1....0..1
..1..2....0..1....0..1....1..2....0..2....0..1....0..2....1..2....0..2....1..2
..1..2....1..2....1..2....0..2....1..2....1..2....1..2....0..2....1..2....0..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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