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A222855 Number of nX1 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 2
2, 3, 6, 10, 20, 36, 74, 137, 282, 536, 1100, 2117, 4332, 8406, 17144, 33464, 68058, 133398, 270700, 532230, 1078080, 2124714, 4297434, 8485470, 17141764, 33898436, 68409684, 135450295, 273114928, 541320762, 1090693986, 2163654766, 4356757738 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A222862

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

All solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A005418 A002215 A007562 * A171682 A066062 A008929

Adjacent sequences:  A222852 A222853 A222854 * A222856 A222857 A222858

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 07 2013

STATUS

approved

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Last modified October 17 07:57 EDT 2018. Contains 316276 sequences. (Running on oeis4.)