A220970 Equals one maps: number of n X n binary arrays indicating the locations of corresponding elements equal to exactly one of their king-move neighbors in a random 0..1 n X n array

1, 2, 94, 1972, 106532, 15607340, 4659594557

Offset

1,2

Comments

Diagonal of A220977

Links

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

Example

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

Crossrefs

Sequence in context: A363017 A158980 A343457 * A302577 A346654 A324165

Adjacent sequences: A220967 A220968 A220969 * A220971 A220972 A220973

Keyword

nonn

Author

R. H. Hardin Dec 27 2012

Status

approved