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A155367
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Number of ways to place zero or more nonadjacent (0,0) (1,0) (1,1) (2,0) (3,1) (4,0) (4,1) (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, 7, 19, 37, 209, 927, 3227, 19783, 150961, 985335, 8837609, 101553731, 1116357221, 14988545712
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OFFSET
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5,2
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COMMENTS
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Same series for (1,0) (1,1) (2,0) (3,0) (3,1) (4,1) (5,0) (5,1) polyhexes.
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LINKS
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EXAMPLE
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Maximal 9 X 9 X 9 example:
...........0
..........1.1
.........0.1.0
........1.1.0.1
.......1.0.0.1.1
......1.1.0.0.0.1
.....0.0.0.0.0.1.0
....1.0.1.1.1.0.1.1
...1.1.1.0.1.0.0.1.0
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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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