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Search: id:A155444
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| A155444 |
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Number of ways to place zero or more nonadjacent 2,0 3,0 4,1 4,2 4,3 4,4 5,1 6,2 polyhexes in any orientation on a planar nXnXn triangular grid. |
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+0
1
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| 1, 7, 19, 37, 61, 215, 976, 6510, 31895, 148311, 835105, 6965183, 70259384, 771053702, 8287139754, 101882179551
(list; graph; listen)
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OFFSET
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6,2
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EXAMPLE
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Maximal 11 X 11 X 11 example
.............0
............0.0
...........1.0.0
..........1.0.0.0
.........0.1.1.1.1
........0.1.0.0.0.0
.......1.0.1.0.1.0.0
......0.1.0.0.0.1.0.0
.....0.0.1.0.1.0.1.0.1
....0.0.0.1.1.0.0.1.1.0
...0.0.1.1.0.0.1.1.0.0.0
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CROSSREFS
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Sequence in context: A155446 A155372 A155373 this_sequence A155439 A155441 A155447
Adjacent sequences: A155441 A155442 A155443 this_sequence A155445 A155446 A155447
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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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