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A222780 Number of (n+3)X4 0..1 arrays with every row and column least squares fitting to a positive slope straight line 0
6, 36, 696, 3960, 44092, 245952, 2148348, 11909916, 92914316, 516123540, 3754783282, 20944422720, 145858066580, 819115053456, 5532833258412, 31237280045460, 206640812099598, 1173206191661712 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A222784

LINKS

Table of n, a(n) for n=1..18.

EXAMPLE

Some solutions for n=2

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

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

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

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

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

CROSSREFS

Sequence in context: A339300 A296389 A077290 * A206636 A244841 A268161

Adjacent sequences:  A222777 A222778 A222779 * A222781 A222782 A222783

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 05 2013

STATUS

approved

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Last modified September 30 17:27 EDT 2022. Contains 357106 sequences. (Running on oeis4.)