A206888 Number of nX7 0..1 arrays avoiding 0 1 0 horizontally and 1 0 0 vertically

65, 4225, 130828, 3619683, 88342972, 2067672443, 47015346159, 1055711535814, 23532283930933, 522710080189316, 11588335111405673, 256664132470888238, 5681796685012635460, 125745518448573773703, 2782522570829447521632

Offset

1,1

Comments

Column 7 of A206889

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A206882 A206999 A189615 * A188772 A207186 A189062

Adjacent sequences: A206885 A206886 A206887 * A206889 A206890 A206891

Keyword

nonn

Author

R. H. Hardin Feb 13 2012

Status

approved