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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 1
18, 120, 2160, 24120, 476298, 6701732, 129263994, 2034174870, 38872156608, 638334265140, 12063810334392, 203277623324301, 3807709928026200, 65141220918760312, 1212020863903182816, 20946272883788339613 (list; graph; refs; listen; history; text; internal format)
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

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Last modified May 10 22:35 EDT 2021. Contains 343780 sequences. (Running on oeis4.)