A219147 Unchanging value maps: number of 6Xn binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 6Xn array

1, 405, 5949, 73136, 989947, 12867295, 170792866, 2268088205, 30263321279, 403675695558, 5385766437559, 71840547896222, 958386976026868, 12786233698435986, 170595408884312447, 2276122067209739706

Offset

1,2

Comments

Row 6 of A219142

Links

Table of n, a(n) for n=1..16.

Example

Some solutions for n=3
..1..0..0....0..0..0....1..0..1....1..0..1....1..0..0....1..0..0....1..0..1
..0..0..0....1..0..0....0..0..1....0..0..1....0..0..1....1..0..1....0..0..1
..1..0..1....0..0..1....1..0..0....0..0..0....1..0..1....1..0..0....1..0..1
..0..1..0....1..0..0....1..0..0....1..0..0....1..0..1....1..0..0....1..0..1
..0..0..0....0..0..1....0..0..1....1..0..0....0..0..1....0..0..0....0..0..1
..0..0..0....0..0..0....0..0..1....1..0..0....1..0..0....1..0..1....0..0..1

Crossrefs

Sequence in context: A151745 A204636 A224527 * A239541 A187134 A185839

Adjacent sequences: A219144 A219145 A219146 * A219148 A219149 A219150

Keyword

nonn

Author

R. H. Hardin Nov 12 2012

Status

approved