login
A222854
Number of n X n 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
0
2, 6, 108, 2262, 452400, 113936464, 391515458264, 1332606996955912
OFFSET
1,1
COMMENTS
Diagonal of A222862
EXAMPLE
Some solutions for n=3
..1..0..1....0..1..0....0..1..0....0..0..1....0..1..0....0..0..1....0..0..0
..1..1..1....1..1..1....0..1..0....1..0..1....0..1..0....0..0..1....0..0..1
..1..0..1....0..1..0....0..1..0....1..0..1....0..1..1....1..0..1....0..0..0
CROSSREFS
Sequence in context: A287935 A357090 A181036 * A351780 A059088 A216151
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 07 2013
STATUS
approved