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Search: id:A155241
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| A155241 |
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 4,1 polyhexes in any orientation on a planar nXnXn triangular grid. |
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+0
1
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| 1, 13, 37, 181, 1229, 8379, 80551, 1100805, 17145265, 351104244, 9283888557, 306284314214
(list; graph; listen)
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OFFSET
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4,2
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EXAMPLE
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Maximal 11 X 11 X 11 example
.............0
............1.0
...........0.1.1
..........1.0.0.1
.........0.1.1.0.1
........0.0.0.1.0.0
.......1.0.1.0.1.0.0
......1.0.1.0.0.0.1.1
.....1.0.1.0.1.1.1.0.0
....0.1.0.1.0.0.0.0.1.1
...0.1.0.1.0.0.1.1.1.0.0
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CROSSREFS
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Sequence in context: A139860 A036570 A147615 this_sequence A155222 A155283 A155282
Adjacent sequences: A155238 A155239 A155240 this_sequence A155242 A155243 A155244
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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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