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A233024
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Number of nX6 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, vertically, diagonally or antidiagonally, and top left element zero
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1
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243, 12555, 959385, 75489671, 6050598339, 487651369463, 39386531523609, 3183658674622011, 257414773440925415, 20815582600558673815, 1683301058522200223439, 136126239210040751513149
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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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FORMULA
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Empirical recurrence of order 50 (see link above)
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EXAMPLE
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Some solutions for n=2
..0..0..2..3..3..3....0..2..2..3..2..0....0..1..0..1..0..0....0..0..1..1..1..1
..0..0..2..3..2..3....2..0..2..3..2..2....1..0..1..1..1..1....0..0..1..3..1..3
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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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