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A222972
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Number of 4 X (n+1) 0..1 arrays with every row least squares fitting to a positive-slope straight line and every column least squares fitting to a zero- or positive-slope straight line, with a single point array taken as having zero slope.
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0
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1, 10, 314, 3140, 53292, 487830, 6811479, 62248790, 767197516, 7042095920, 81955369777, 758479227700, 8507298585600, 79472821382440, 870035427428542, 8203118157997530
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listen;
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text;
internal format)
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OFFSET
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1,2
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LINKS
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EXAMPLE
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Some solutions for n=3:
0 0 1 0 1 0 1 1 0 0 1 0 0 0 1 1 0 0 1 1
0 1 0 1 1 0 1 1 0 0 1 1 0 0 0 1 0 1 0 1
0 1 1 1 1 0 1 1 0 1 1 1 0 0 0 1 0 0 0 1
0 0 1 1 1 0 1 1 0 0 1 0 0 1 1 1 0 1 1 1
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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