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A155277
Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,0 4,0 5,0 polyhexes in any orientation on a planar nXnXn triangular grid.
0
1, 13, 37, 210, 1580, 9923, 75893, 791786, 9986174, 154732984
OFFSET
5,2
EXAMPLE
Maximal 12 X 12 X 12 example
..............0
.............1.1
............1.0.0
...........1.0.1.0
..........1.0.1.0.0
.........1.0.1.0.1.1
........0.0.1.0.0.0.1
.......0.1.1.0.0.1.0.1
......0.0.0.0.0.0.1.0.1
.....1.1.1.1.1.0.0.1.0.1
....1.0.0.0.0.0.1.0.1.0.0
...0.0.1.1.1.1.1.0.0.1.1.0
CROSSREFS
Sequence in context: A155282 A193646 A155236 * A090042 A266882 A078952
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved