A223312 Number of nX3 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

8, 26, 136, 454, 2096, 7490, 32536, 118190, 495984, 1829612, 7534896, 28093022, 114631272, 431107760, 1749879648, 6626934528, 26812323712, 102112441820, 412247828720, 1577225857288, 6357677720504, 24416496168472, 98306183091960

Offset

1,1

Comments

Column 3 of A223317

Links

R. H. Hardin, Table of n, a(n) for n = 1..55

Example

Some solutions for n=4
..0..0..0....1..0..0....1..0..0....1..1..0....1..0..0....0..0..0....1..1..0
..0..0..0....1..0..0....1..1..1....1..0..1....0..1..0....0..0..1....1..0..1
..0..0..0....0..0..0....1..1..1....1..0..1....1..1..1....0..1..1....0..0..0
..0..1..1....0..0..0....1..0..1....0..0..1....0..0..1....0..0..1....0..0..1

Crossrefs

Sequence in context: A220713 A260962 A274733 * A194997 A089064 A240291

Adjacent sequences: A223309 A223310 A223311 * A223313 A223314 A223315

Keyword

nonn

Author

R. H. Hardin Mar 19 2013

Status

approved