A207186 Number of 7Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically

65, 4225, 151981, 6951227, 310484943, 13575513917, 600838995529, 26534076780959, 1170871871472313, 51701095335035709, 2282533143749663089, 100768156649910377157, 4448827811097756475927, 196409522544211889696463

Offset

1,1

Comments

Row 7 of A207182

Links

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

Example

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

Crossrefs

Sequence in context: A189615 A206888 A188772 * A189062 A078988 A027535

Adjacent sequences: A207183 A207184 A207185 * A207187 A207188 A207189

Keyword

nonn

Author

R. H. Hardin Feb 15 2012

Status

approved