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A155253
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Number of ways to place zero or more nonadjacent 1,1 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, 378, 3421, 36342, 293256, 3406317, 59935388, 1419179921, 37034743264, 1162832741191, 48524067272860
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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
............1.0
...........1.1.1
..........0.0.1.0
.........1.0.0.1.0
........1.1.1.0.0.0
.......0.0.1.0.0.0.0
......0.1.0.1.0.0.1.0
.....1.1.0.0.0.1.0.1.1
....0.1.0.1.1.1.1.0.1.0
...0.1.1.0.0.1.0.0.1.1.0
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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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