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A220535
Equals one maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 nX4 array
0
8, 25, 625, 6620, 67729, 686206, 7024942, 72007269, 739028492, 7580428560, 77728750356, 797017436103, 8172940998884
OFFSET
1,1
COMMENTS
Column 4 of A220537
EXAMPLE
Some solutions for n=3
..0..0..0..0....1..0..0..0....0..0..1..0....1..0..0..1....0..0..1..1
..0..0..1..0....1..1..0..0....0..0..1..0....0..0..0..1....1..0..0..1
..0..0..1..0....1..0..1..0....0..0..0..0....0..0..1..1....1..1..0..0
CROSSREFS
Sequence in context: A316927 A004246 A362276 * A060718 A060743 A029617
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 15 2012
STATUS
approved