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A155242
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 4,2 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 19, 70, 235, 1578, 9621, 89416, 823589, 11073433, 160764354, 3227749885, 73045396627, 2178986476482
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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 11 X 11 X 11 example
.............0
............0.0
...........1.1.1
..........0.0.0.1
.........1.1.1.0.1
........1.0.0.0.0.0
.......1.0.0.0.1.1.1
......0.0.0.0.0.0.0.1
.....1.0.1.1.1.0.1.0.1
....0.1.0.0.0.1.0.1.0.0
...0.0.1.1.1.0.1.0.1.1.1
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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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