A220584 Equals one maps: number of 6Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 6Xn array

1, 2048, 5835, 2352642, 59690533, 4239598056, 178051989526

Offset

1,2

Comments

Row 6 of A220579

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A035892 A069272 A234881 * A195069 A316499 A135290

Adjacent sequences: A220581 A220582 A220583 * A220585 A220586 A220587

Keyword

nonn

Author

R. H. Hardin Dec 16 2012

Status

approved