A223063 Number of n X 3 0..3 arrays with every row having the same least squares slope fit to a straight line, and every column the same least squares slope fit to a straight line, with a single point array taken as having zero slope.

64, 136, 1632, 6794, 131776, 713324, 16579616, 101534218, 2587754048, 17004518216, 457999682592, 3144948187898, 87766837860672, 620381060842080, 17731687609527120, 127856306946176644, 3716111018401613392

Offset

1,1

Comments

Column 3 of A223066.

Links

R. H. Hardin, Table of n, a(n) for n = 1..35

Example

Some solutions for n=3:
..0..2..2....2..2..3....1..0..0....3..3..3....0..1..1....2..3..0....1..2..2
..1..0..3....1..0..2....3..3..2....3..1..3....0..1..1....2..3..0....2..2..3
..1..3..3....0..0..1....3..2..2....2..2..2....0..1..1....2..3..0....0..1..1

Crossrefs

Cf. A223066.

Sequence in context: A252081 A068410 A250654 * A216330 A110232 A348548

Adjacent sequences: A223060 A223061 A223062 * A223064 A223065 A223066

Keyword

nonn

Author

R. H. Hardin, Mar 13 2013

Status

approved