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A222968
Number of n X 7 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
54, 534, 28836, 487830, 26342820, 677339136, 41972251734, 1306606331404, 82298403509112, 3041055175823616, 191470088044451700
OFFSET
1,1
EXAMPLE
Some solutions for n=3:
1 0 0 0 0 1 1 0 0 1 0 0 0 1 1 0 0 0 0 1 1
0 0 0 0 0 0 1 0 0 0 1 1 0 1 1 0 1 1 0 1 1
1 0 0 1 1 1 1 0 0 1 0 0 0 1 1 1 0 1 1 1 1
CROSSREFS
Column 6 of A222969.
Sequence in context: A192216 A238908 A233364 * A228016 A245833 A254701
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Mar 10 2013
STATUS
approved