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Search: id:A155346
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| A155346 |
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Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,1 4,1 5,2 5,3 polyhexes in any orientation on a planar nXnXn triangular grid. |
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+0
1
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| 1, 7, 19, 37, 94, 330, 1713, 11184, 64025, 403539, 3128291, 30538252, 364356710, 4898497176, 73557982663
(list; graph; listen)
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OFFSET
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5,2
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EXAMPLE
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Maximal 12 X 12 X 12 example
..............0
.............0.0
............0.0.0
...........0.0.0.0
..........1.1.0.1.1
.........1.0.0.0.0.1
........0.1.0.0.0.1.0
.......0.1.0.0.0.0.1.0
......1.0.1.1.0.1.1.0.1
.....1.0.0.0.0.0.0.0.0.1
....0.1.1.0.1.0.1.0.1.1.0
...0.0.0.1.1.0.0.1.1.0.0.0
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CROSSREFS
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Sequence in context: A155425 A155410 A155429 this_sequence A155398 A155431 A155329
Adjacent sequences: A155343 A155344 A155345 this_sequence A155347 A155348 A155349
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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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