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A222861
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Number of nX7 0..1 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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0
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74, 957, 70818, 1672630, 123774620, 4591340316, 391515458264, 17450875607453, 1511308709957178, 79588923349819304, 6846350333965041900
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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
..0..0..1..1..0..1..0....0..1..0..0..0..1..0....1..0..0..0..0..1..1
..0..0..0..0..0..1..0....1..0..1..1..1..0..1....1..0..0..0..0..1..1
..1..0..1..1..1..1..1....0..1..1..0..1..1..1....1..1..0..1..0..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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