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A155320
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Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,0 4,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 4, 13, 28, 129, 586, 2176, 14358, 112046, 791851, 8217946, 101868365, 1252862099, 20806137393
(list;
graph;
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 11 X 11 X 11 example
.............1
............1.1
...........1.0.0
..........1.0.0.1
.........1.1.0.1.1
........0.0.0.0.0.1
.......0.0.0.0.0.0.1
......1.1.1.1.1.0.1.1
.....0.1.0.0.1.0.0.0.0
....1.0.0.1.0.0.1.0.0.1
...1.1.1.1.1.0.1.1.1.1.1
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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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