A223046 Number of nX3 0..2 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

18, 120, 2160, 24120, 476298, 6701732, 129263994, 2034174870, 38872156608, 638334265140, 12063810334392, 203277623324301, 3807709928026200, 65141220918760312, 1212020863903182816, 20946272883788339613

Offset

1,1

Comments

Column 3 of A223048

Links

R. H. Hardin, Table of n, a(n) for n = 1..17

Example

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

Crossrefs

Sequence in context: A190705 A108648 A264360 * A037064 A077960 A107971

Adjacent sequences: A223043 A223044 A223045 * A223047 A223048 A223049

Keyword

nonn

Author

R. H. Hardin Mar 12 2013

Status

approved