A223315 Number of nX6 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

64, 247, 7490, 43999, 1137386, 9696201, 196812586, 1743257458, 27396916796

Offset

1,1

Comments

Column 6 of A223317

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A198071 A218902 A197905 * A263924 A236331 A321070

Adjacent sequences: A223312 A223313 A223314 * A223316 A223317 A223318

Keyword

nonn

Author

R. H. Hardin Mar 19 2013

Status

approved