

A222973


Number of 5X(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
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OFFSET

1,2


COMMENTS

Row 5 of A222969


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

Sequence in context: A330196 A172556 A246619 * A267575 A072818 A123479
Adjacent sequences: A222970 A222971 A222972 * A222974 A222975 A222976


KEYWORD

nonn


AUTHOR

R. H. Hardin Mar 10 2013


STATUS

approved



