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A265592
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Number of 3Xn 0..3*n-1 arrays with upper left zero and lower right 3*n-1 and each element differing from its horizontal and antidiagonal neighbors by a power of two.
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1
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3, 79, 9327, 927797, 82725668, 12404184853, 1961916558139, 205199911524811, 32566506281706134, 3625304390972323537, 618755342504397622109, 87849263845468588422281, 14938881681298157851105131
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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..8..0....0..4..6....0..8..0....0..4..0....0..4..5....0..1..0....0..4..5
..0..1..5....6..4..8....0..4..5....3..2..3....5..4..3....5..1..3....6..7..8
..2..6..8....8..6..8....5..6..8....6..7..8....3..4..8....0..4..8....5..4..8
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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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