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Search: id:A155262
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| A155262 |
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Number of ways to place zero or more nonadjacent 1,1 2,1 2,2 3,0 3,1 4,2 polyhexes in any orientation on a planar nXnXn triangular grid. |
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+0
1
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| 1, 13, 37, 73, 270, 3023, 31666, 204526, 1765714, 30617532, 748500437, 15766186082, 363909913887, 12760152079877, 642694450893529
(list; graph; listen)
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OFFSET
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4,2
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COMMENT
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Same series for 1,0 2,0 2,1 2,2 3,0 4,1 polyhexes.
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EXAMPLE
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Maximal 11 X 11 X 11 example
.............0
............1.0
...........0.1.1
..........1.1.0.0
.........0.1.0.1.1
........0.0.0.0.1.0
.......0.1.0.1.0.1.1
......0.1.1.1.0.1.0.0
.....1.0.0.0.1.0.0.0.1
....0.1.1.1.0.0.1.1.1.0
...0.1.0.1.0.0.0.1.0.1.0
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CROSSREFS
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Sequence in context: A003154 A083577 A155285 this_sequence A155301 A155284 A155304
Adjacent sequences: A155259 A155260 A155261 this_sequence A155263 A155264 A155265
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net) Jan 22 2009
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