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A155358
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Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 2,2 3,1 3,2 4,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 19, 37, 82, 439, 3622, 21277, 115970, 907157, 11150700, 162360713, 2286713291, 36892603949, 784002340205, 21639656177753
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OFFSET
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4,2
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LINKS
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EXAMPLE
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Maximal 9 X 9 X 9 example
...........0
..........0.1
.........1.1.1
........1.1.1.0
.......0.1.0.0.0
......0.0.0.0.1.1
.....1.1.0.0.0.1.1
....1.1.1.1.0.1.1.0
...0.0.1.1.0.0.1.1.0
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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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