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A155229
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Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 2,2 3,1 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 4, 10, 19, 54, 346, 1831, 9221, 66079, 717157, 8272905, 104484553, 1712695513, 36940968544, 931841300560, 27497789520438, 1009266090959240, 46345568210962143
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OFFSET
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3,2
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LINKS
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EXAMPLE
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Maximal 11 X 11 X 11 example
.............0
............1.0
...........1.1.1
..........0.0.1.0
.........0.0.0.0.0
........1.1.0.0.0.1
.......0.1.0.0.1.1.1
......0.1.1.0.0.1.0.0
.....1.0.0.0.1.0.0.1.1
....1.1.1.0.1.1.1.0.1.0
...0.0.1.0.0.0.1.0.1.1.0
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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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