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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 0
1, 2, 94, 1972, 106532, 15607340, 4659594557 (list; graph; refs; listen; history; text; internal format)
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: A287611 A158980 A343457 * A302577 A346654 A324165

Adjacent sequences:  A220967 A220968 A220969 * A220971 A220972 A220973

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 27 2012

STATUS

approved

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Last modified October 21 21:25 EDT 2021. Contains 348155 sequences. (Running on oeis4.)