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Search: id:A155344
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| A155344 |
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,1 4,0 4,1 5,0 polyhexes in any orientation on a planar nXnXn triangular grid. |
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+0
1
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| 1, 4, 13, 37, 146, 632, 2601, 11932, 76177, 558787, 4627682, 46978044, 543470526
(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
...........0
..........0.1
.........1.0.1
........1.0.1.0
.......0.1.0.1.0
......0.1.0.0.1.1
.....1.1.0.0.0.0.1
....1.0.0.1.1.1.0.0
...0.0.1.1.0.0.1.1.0
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CROSSREFS
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Sequence in context: A108489 A155375 A155307 this_sequence A155418 A155235 A024450
Adjacent sequences: A155341 A155342 A155343 this_sequence A155345 A155346 A155347
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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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