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.

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

R. H. Hardin, Table of n, a(n) for n = 1..27

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

Adjacent sequences: A223310 A223311 A223312 * A223314 A223315 A223316

Keyword

nonn

Author

R. H. Hardin, Mar 19 2013

Status

approved