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A155437
Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,2 3,1 3,2 4,1 5,1 polyhexes in any orientation on a planar nXnXn triangular grid.
0
1, 7, 19, 37, 100, 428, 1830, 11336, 67788, 454698, 3575689, 35749465, 410313440, 5458200826, 83668909890
OFFSET
5,2
EXAMPLE
Maximal 10 X 10 X 10 example
............0
...........1.1
..........1.0.1
.........0.1.1.0
........0.1.0.0.0
.......0.1.0.0.1.0
......0.0.0.0.0.1.0
.....1.1.0.0.0.0.1.1
....1.0.1.1.1.0.1.0.1
...0.1.1.0.0.0.0.1.1.0
CROSSREFS
Sequence in context: A155329 A155424 A155349 * A155299 A155379 A155243
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved