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

139, 3886, 540154, 43640576, 6578580741, 713054874385, 107232700247240, 12938444501010386, 1917660834712753905

Offset

1,1

Comments

Column 4 of A223165

Links

Table of n, a(n) for n=1..9.

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

Adjacent sequences: A223160 A223161 A223162 * A223164 A223165 A223166

Keyword

nonn

Author

R. H. Hardin Mar 16 2013

Status

approved