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.

54, 534, 28836, 487830, 26342820, 677339136, 41972251734, 1306606331404, 82298403509112, 3041055175823616, 191470088044451700

Offset: 1

Author

R. H. Hardin, Mar 10 2013

Keywords

• nonn
• more

Examples

			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.