A223748 Number of nX3 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

24, 200, 4800, 74504, 1918704, 37050508, 946850616, 20113935465, 509453736192, 11257895221560, 282315340773312, 6383772791781791, 158807147100328272, 3640670785754169744, 90021689826455389824, 2082728356589903943286

Offset

1,1

Comments

Column 2 of A223751

Links

R. H. Hardin, Table of n, a(n) for n = 1..30

Example

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

Crossrefs

Sequence in context: A132458 A055857 A239574 * A269691 A282644 A283540

Adjacent sequences: A223745 A223746 A223747 * A223749 A223750 A223751

Keyword

nonn

Author

R. H. Hardin Mar 27 2013

Status

approved