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Search: id:A155440
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| A155440 |
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Number of ways to place zero or more nonadjacent 1,0 2,0 2,2 3,0 3,2 4,1 4,2 5,1 polyhexes in any orientation on a planar nXnXn triangular grid. |
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+0
1
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| 1, 7, 19, 37, 76, 332, 1823, 10749, 53165, 313295, 2436626, 24495034, 277288339, 3304478802, 44732292922, 736452039398
(list; graph; listen)
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OFFSET
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5,2
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COMMENT
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Same series for 1,1 2,0 2,1 3,2 3,3 4,2 4,3 5,4 polyhexes.
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EXAMPLE
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Maximal 10 X 10 X 10 example
............0
...........0.1
..........1.0.1
.........0.1.0.1
........0.0.1.1.0
.......0.1.0.0.1.0
......1.1.0.0.0.0.0
.....1.0.1.0.0.1.1.1
....1.0.1.0.1.1.0.0.0
...0.0.1.0.0.0.1.1.1.0
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CROSSREFS
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Sequence in context: A155396 A155411 A155436 this_sequence A155327 A155363 A155395
Adjacent sequences: A155437 A155438 A155439 this_sequence A155441 A155442 A155443
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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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