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A223047
Number of nX4 0..2 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
45, 536, 24120, 570915, 28942155, 932439860, 46018580355, 1721938403990, 83979492229170
OFFSET
1,1
COMMENTS
Column 4 of A223048
EXAMPLE
Some solutions for n=3
..1..0..1..2....0..1..0..1....0..0..1..0....0..0..0..2....0..1..1..0
..1..1..2..1....0..1..2..0....0..0..2..1....0..1..1..0....1..0..1..1
..2..0..2..2....1..1..1..1....0..2..2..2....2..0..0..2....0..1..1..1
CROSSREFS
Sequence in context: A093529 A197501 A283116 * A147842 A349849 A027783
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 12 2013
STATUS
approved