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A155308
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,1 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 13, 37, 112, 595, 3710, 30281, 253489, 2990675, 42651723, 721885534, 15178835272
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listen;
history;
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OFFSET
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5,2
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LINKS
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EXAMPLE
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Maximal 13 X 13 X 13 example
...............0
..............0.0
.............1.1.0
............0.0.1.0
...........0.0.0.1.1
..........0.1.1.0.0.1
.........0.1.0.0.1.0.0
........1.1.0.0.0.1.1.0
.......1.0.0.0.0.0.0.1.0
......0.0.1.0.0.1.0.0.1.1
.....0.1.1.0.1.1.0.1.0.0.0
....0.1.0.0.1.0.0.0.1.1.1.0
...1.1.0.1.1.0.0.0.0.0.0.1.1
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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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