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A223820
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Number of nX3 0..3 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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16, 16, 256, 484, 12544, 29584, 1132096, 3034564, 136048896, 399040576, 19221049600, 59439415204, 3000766281984, 9636752993344, 502638822873664, 1660231626483600, 88755496992657664, 299596751622662400
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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=4
..1..0..1....2..1..2....0..2..0....1..0..1....3..1..3....3..2..3....0..3..0
..1..0..1....3..3..3....2..2..2....2..0..2....1..3..1....1..0..1....2..0..2
..1..0..1....3..0..3....2..2..2....2..0..2....1..0..1....1..3..1....2..0..2
..1..0..1....2..2..2....0..2..0....1..0..1....3..2..3....3..1..3....0..3..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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