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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
OFFSET
1,1
COMMENTS
Column 3 of A222862
LINKS
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 * A367664 A361729 A108735
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 07 2013
STATUS
approved