A219135 Unchanging value maps: number of n X n binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 n X n array

1, 6, 78, 1774, 101600, 12867295, 3862325048, 2678391894154

Offset

1,2

Comments

Diagonal of A219142

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A179498 A177556 A219435 * A208308 A353411 A053771

Adjacent sequences: A219132 A219133 A219134 * A219136 A219137 A219138

Keyword

nonn

Author

R. H. Hardin Nov 12 2012

Status

approved