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A155326
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Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,0 3,1 4,0 5,1 polyhexes in any orientation on a planar n X n X n triangular grid.
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0
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1, 4, 13, 28, 111, 502, 1855, 10932, 85106, 591988, 5415550, 64685900, 769802654, 11442223576
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OFFSET
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4,2
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COMMENTS
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Same series for 1,0 1,1 2,0 2,1 3,0 4,0 4,1 5,1 polyhexes.
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LINKS
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EXAMPLE
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Maximal 8 X 8 X 8 example
..........1
.........0.1
........1.1.0
.......0.1.0.1
......1.1.0.1.0
.....0.0.0.0.1.1
....1.1.1.1.0.1.0
...1.0.1.0.1.0.1.1
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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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