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A155427
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,2 4,2 5,3 6,4 7,4 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 19, 43, 130, 466, 1972, 9920, 52566, 311924, 2236063, 18426118
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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7,2
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LINKS
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EXAMPLE
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Maximal 10 X 10 X 10 example
............0
...........0.0
..........1.0.1
.........0.1.0.1
........0.1.0.1.0
.......0.1.0.1.0.0
......0.0.1.0.1.0.0
.....0.0.1.0.1.0.0.0
....0.0.1.0.1.0.0.0.0
...0.0.0.1.0.1.0.0.0.0
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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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