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A223744
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Number of nX3 0..2 arrays with every row and column least squares fitting to a zero slope straight line, with a single point array taken as having zero slope
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1
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9, 9, 81, 81, 1521, 1849, 38025, 59049, 1461681, 2368521, 64112049, 111450249, 3167100729, 5714604025, 167633743761, 311494585689, 9370449532161, 17792173577929, 545559866271729, 1054096283988801, 32828183598395025
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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=6
..1..2..1....2..2..2....1..2..1....1..2..1....1..1..1....2..1..2....0..2..0
..0..2..0....2..1..2....1..0..1....1..0..1....1..1..1....0..2..0....2..2..2
..1..1..1....0..0..0....2..0..2....1..1..1....1..2..1....0..0..0....0..2..0
..1..1..1....0..2..0....0..0..0....1..1..1....1..0..1....0..0..0....0..2..0
..0..2..0....2..2..2....0..0..0....1..0..1....1..0..1....0..2..0....2..2..2
..1..2..1....2..1..2....2..2..2....1..2..1....1..2..1....2..1..2....0..2..0
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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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