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A155218
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Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 19, 64, 604, 5668, 60291, 1139786, 28911749, 917529031, 42684328880, 2779416860900, 242990212063594, 29572386974464964, 5010503933132486018, 1166195763716912084751, 374917567112932723176757
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OFFSET
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2,2
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LINKS
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EXAMPLE
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Maximal 13 X 13 X 13 example
...............0
..............1.1
.............1.0.0
............0.0.1.1
...........1.1.0.0.1
..........1.0.0.1.0.0
.........0.0.1.1.0.1.1
........1.0.0.0.0.1.0.0
.......1.0.1.0.1.0.0.1.1
......0.1.0.1.0.1.1.0.0.1
.....1.0.0.1.0.0.0.0.1.0.0
....1.0.1.0.0.1.1.0.1.0.1.0
...0.1.0.1.1.0.0.1.0.1.0.1.1
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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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