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A222965 Number of nX4 0..1 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 0
6, 16, 96, 314, 1884, 7344, 46512, 199912, 1281096, 6018524, 38837844, 192182076, 1239097956, 6379184870, 40998506544, 217140146844, 1387598473608, 7510403679888, 47773334036628, 262699726452550, 1662636615068856 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A222969

LINKS

Table of n, a(n) for n=1..21.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A210370 A266180 A229566 * A009354 A034191 A115331

Adjacent sequences:  A222962 A222963 A222964 * A222966 A222967 A222968

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 10 2013

STATUS

approved

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Last modified October 19 16:17 EDT 2019. Contains 328223 sequences. (Running on oeis4.)