A240654 Number of nX6 0..1 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..1 introduced in row major order

1, 10, 136, 1545, 16629, 184819, 2076117, 23697768, 272201307, 3137010024, 36217287513, 418547014847, 4839698233313, 55979951123885, 647628362479276, 7493125930415564, 86701026167433662, 1003225793066345318

Offset

1,2

Comments

Column 6 of A240656

Links

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

Example

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

Crossrefs

Sequence in context: A133197 A287473 A240917 * A128862 A129803 A065024

Adjacent sequences: A240651 A240652 A240653 * A240655 A240656 A240657

Keyword

nonn

Author

R. H. Hardin, Apr 09 2014

Status

approved