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A222861 Number of nX7 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 0
74, 957, 70818, 1672630, 123774620, 4591340316, 391515458264, 17450875607453, 1511308709957178, 79588923349819304, 6846350333965041900 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A222862

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A186124 A204353 A300487 * A242146 A007033 A277941

Adjacent sequences:  A222858 A222859 A222860 * A222862 A222863 A222864

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 07 2013

STATUS

approved

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Last modified February 26 09:45 EST 2020. Contains 332277 sequences. (Running on oeis4.)