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Search: id:A155366
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| A155366 |
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Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,0 3,0 4,0 5,0 5,1 polyhexes in any orientation on a planar nXnXn triangular grid. |
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+0
1
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| 1, 4, 13, 28, 135, 642, 2485, 11927, 77152, 533119, 4074088, 40881018, 462133122
(list; graph; listen)
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OFFSET
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5,2
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EXAMPLE
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Maximal 9 X 9 X 9 example
...........1
..........1.1
.........0.0.1
........1.0.0.1
.......1.1.0.0.1
......1.0.0.0.1.1
.....1.0.0.0.0.0.0
....1.0.0.1.0.0.0.1
...1.1.0.1.1.1.1.1.1
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CROSSREFS
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Sequence in context: A155279 A155331 A155387 this_sequence A135039 A015634 A161742
Adjacent sequences: A155363 A155364 A155365 this_sequence A155367 A155368 A155369
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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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