A223749 Number of nX4 0..3 arrays with every row least squares fitting to a positive slope straight line and every column least squares fitting to a zero or positive slope straight line, with a single point array taken as having zero slope

117, 2826, 330642, 21965901, 2810374281, 252313355237, 32063498387856, 3229688051024065, 404471979822899781

Offset

1,1

Comments

Column 3 of A223751

Links

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

Example

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

Crossrefs

Sequence in context: A233051 A278774 A219990 * A218416 A027511 A203626

Adjacent sequences: A223746 A223747 A223748 * A223750 A223751 A223752

Keyword

nonn

Author

R. H. Hardin Mar 27 2013

Status

approved