A222974 - OEIS

A222974

Number of 6 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.

1, 36, 7344, 264384, 21852384, 677339136, 41252032201, 1279444594428, 63987904860942, 2004349575346776

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3:

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

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

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

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

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

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

CROSSREFS

Row 6 of A222969.

Sequence in context: A068272 A068284 A145248 * A013739 A203052 A054407

Adjacent sequences: A222971 A222972 A222973 * A222975 A222976 A222977

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Mar 10 2013

STATUS

approved