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A155348
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Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,2 4,3 4,4 5,3 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 4, 10, 19, 43, 128, 488, 2206, 10000, 48377, 276446, 1912377, 15358537, 137081258, 1363205310, 15492211198, 203922791257, 3090086318993
(list; graph; refs; listen; history; internal format)
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OFFSET
| 5,2
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EXAMPLE
| Maximal 10 X 10 X 10 example
............0
...........0.0
..........1.0.0
.........0.1.1.0
........0.1.0.0.1
.......1.1.0.1.1.0
......0.0.1.0.0.1.0
.....0.1.0.0.1.0.1.1
....0.0.1.1.1.0.1.0.0
...0.0.1.0.0.1.0.0.0.0
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CROSSREFS
| Sequence in context: A155380 A155445 A133952 * A155269 A155322 A155428
Adjacent sequences: A155345 A155346 A155347 * A155349 A155350 A155351
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KEYWORD
| nonn
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AUTHOR
| R. H. Hardin (rhhardin(AT)att.net) Jan 22 2009
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