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A220535
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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
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0
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8, 25, 625, 6620, 67729, 686206, 7024942, 72007269, 739028492, 7580428560, 77728750356, 797017436103, 8172940998884
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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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
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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