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A222971 Number of 3X(n+1) 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 1
1, 6, 96, 576, 5180, 28836, 222887, 1241310, 8712264, 48837168, 328280478, 1854039060, 12126536066, 69047705664, 443482507552, 2544063717888, 16136462307440, 93109093464048, 585311170019020, 3393940344415872 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 3 of A222969

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..24

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A116289 A116256 A275086 * A196813 A179058 A303212

Adjacent sequences:  A222968 A222969 A222970 * A222972 A222973 A222974

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 10 2013

STATUS

approved

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Last modified September 22 16:55 EDT 2019. Contains 327311 sequences. (Running on oeis4.)