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A222973 Number of 5 X (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. 0
1, 20, 1884, 37680, 1492176, 26342820, 810566001, 14317221700, 374392387808, 6675906932160, 162189676788683, 2927729818922000, 67871228115916800, 1241683361279242560 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for n=3:

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

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

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

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

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

CROSSREFS

Row 5 of A222969.

Sequence in context: A330196 A172556 A246619 * A267575 A072818 A123479

Adjacent sequences:  A222970 A222971 A222972 * A222974 A222975 A222976

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Mar 10 2013

STATUS

approved

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Last modified August 18 10:19 EDT 2022. Contains 356211 sequences. (Running on oeis4.)