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A223313
Number of n X 4 0..1 arrays with successive rows and columns fitting to straight lines with nondecreasing slope, with a single point array taken as having zero slope.
1
16, 57, 454, 1792, 10788, 43999, 226126, 874205, 4025000, 15472252, 66378320, 251166657, 1040520624, 3937703717, 16021122364, 60678306334, 245065674186, 932218789579, 3750451651646, 14310037237132, 57374909585066
OFFSET
1,1
COMMENTS
Column 4 of A223317.
LINKS
EXAMPLE
Some solutions for n=4
..1..1..0..1....1..0..1..0....0..0..0..0....1..1..0..0....0..0..1..0
..0..1..1..0....0..1..0..0....0..0..0..1....1..1..0..0....0..0..1..0
..1..0..0..1....0..0..1..0....0..1..1..1....0..1..1..1....0..0..1..0
..0..1..0..1....0..0..1..1....0..0..0..1....0..0..0..1....0..0..1..1
CROSSREFS
Cf. A223317.
Sequence in context: A221068 A187277 A316443 * A235679 A235449 A235736
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 19 2013
STATUS
approved