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A155265
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Number of ways to place zero or more nonadjacent 1,0 2,0 2,1 2,2 3,1 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 13, 37, 73, 333, 3889, 39159, 271617, 3012146, 61623325, 1541710905, 35611299121, 1059291769629, 47181801621713, 2749984961944969
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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 12 X 12 X 12 example
..............0
.............0.1
............1.1.1
...........0.0.1.0
..........0.0.0.1.0
.........0.1.0.0.0.1
........1.1.1.0.1.1.0
.......0.0.1.0.1.1.0.0
......0.1.0.1.0.0.1.0.0
.....1.1.0.0.0.1.0.0.0.1
....1.1.0.1.1.1.0.1.1.1.0
...0.0.1.0.0.1.1.0.0.1.1.0
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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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