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A155329
Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,1 4,1 4,2 5,3 polyhexes in any orientation on a planar nXnXn triangular grid.
0
1, 7, 19, 37, 94, 403, 2775, 16917, 98970, 720295, 7051084, 87717398, 1205893340, 18539305616, 340372026066, 7675251517791
OFFSET
5,2
EXAMPLE
Maximal 10 X 10 X 10 example
............0
...........0.0
..........0.1.0
.........1.1.1.1
........0.0.0.1.0
.......0.1.0.0.1.0
......1.1.0.0.0.0.1
.....0.1.0.0.0.0.1.0
....0.1.1.0.1.1.1.1.0
...0.0.0.1.0.0.1.0.0.0
CROSSREFS
Sequence in context: A155346 A155398 A155431 * A155424 A155349 A155437
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved