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A216609
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Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of an nX3 array with new integer colors introduced in row major order
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1
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1, 1, 2, 20, 67, 1335, 6097, 192713, 1094076, 49055292, 329588907, 19602119017, 151146594991, 11399696350555, 98774751736976, 9146845346099410, 87700687826082507, 9731199828137067515, 102042888281439150263
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OFFSET
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1,3
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..x..0..x....x..0..x....x..0..x....x..0..x....x..0..x....x..0..x....x..0..x
..1..x..2....1..x..2....1..x..2....1..x..2....1..x..2....1..x..2....1..x..2
..x..3..x....x..3..x....x..3..x....x..0..x....x..3..x....x..0..x....x..0..x
..4..x..1....0..x..1....0..x..4....3..x..1....4..x..0....2..x..3....1..x..2
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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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