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A222968 Number of n X 7 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
54, 534, 28836, 487830, 26342820, 677339136, 41972251734, 1306606331404, 82298403509112, 3041055175823616, 191470088044451700 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=3:

1 0 0 0 0 1 1 0 0 1 0 0 0 1 1 0 0 0 0 1 1

0 0 0 0 0 0 1 0 0 0 1 1 0 1 1 0 1 1 0 1 1

1 0 0 1 1 1 1 0 0 1 0 0 0 1 1 1 0 1 1 1 1

CROSSREFS

Column 6 of A222969.

Sequence in context: A192216 A238908 A233364 * A228016 A245833 A254701

Adjacent sequences: A222965 A222966 A222967 * A222969 A222970 A222971

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Mar 10 2013

STATUS

approved

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Last modified November 28 19:17 EST 2022. Contains 358421 sequences. (Running on oeis4.)