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A222857 Number of nX3 0..1 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
6, 18, 108, 410, 2460, 11160, 70818, 346610, 2213136, 11587248, 73844100, 399763695, 2535415632, 14043080412, 88488807432, 497957337496, 3117629380302, 17742484266750, 110507820665700, 634061126810250, 3931544430607680 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A222862

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..37

EXAMPLE

Some solutions for n=3

..0..0..1....1..1..1....1..0..1....0..0..0....0..1..0....0..0..1....0..1..0

..1..0..1....0..1..1....1..0..1....1..0..1....0..1..1....0..0..0....1..0..1

..0..1..1....1..1..1....1..1..1....0..0..0....0..1..0....1..0..1....0..1..0

CROSSREFS

Sequence in context: A052655 A274499 A181038 * A108735 A143556 A007126

Adjacent sequences:  A222854 A222855 A222856 * A222858 A222859 A222860

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 07 2013

STATUS

approved

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Last modified February 20 06:26 EST 2019. Contains 320332 sequences. (Running on oeis4.)