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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
OFFSET
1,2
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
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Mar 10 2013
STATUS
approved