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A155289
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 25, 55, 208, 1150, 9013, 76658, 703883, 8056303, 122331252, 2348850844, 54143239435
(list;
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refs;
listen;
history;
text;
internal format)
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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 12 X 12 X 12 example
..............0
.............0.0
............1.1.1
...........1.0.0.0
..........0.1.0.0.1
.........0.1.0.0.0.1
........0.0.0.0.0.0.1
.......1.0.0.1.0.1.1.0
......1.0.0.1.0.1.0.0.0
.....1.0.0.1.0.0.0.0.1.1
....0.1.1.0.1.1.0.1.1.0.1
...0.0.0.1.0.0.1.0.0.0.0.1
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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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