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A223163
Number of nX4 0..3 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
0
139, 3886, 540154, 43640576, 6578580741, 713054874385, 107232700247240, 12938444501010386, 1917660834712753905
OFFSET
1,1
COMMENTS
Column 4 of A223165
EXAMPLE
Some solutions for n=3
..0..0..0..0....0..0..0..1....1..0..0..2....0..0..0..3....0..0..0..1
..1..0..1..1....1..2..0..2....0..1..3..0....1..0..1..2....2..1..2..2
..1..0..3..1....0..0..1..3....1..0..2..2....3..1..2..3....1..1..2..3
CROSSREFS
Sequence in context: A271977 A217724 A230693 * A158527 A201174 A281249
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 16 2013
STATUS
approved