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A155400
Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 3,1 4,2 5,2 6,2 6,3 polyhexes in any orientation on a planar nXnXn triangular grid.
0
1, 7, 19, 37, 106, 414, 1792, 8692, 50965, 347596, 2639357, 22946779, 235883238, 2823234704
OFFSET
6,2
EXAMPLE
Maximal 11 X 11 X 11 example
.............0
............0.0
...........0.0.1
..........0.0.1.1
.........0.1.1.0.0
........1.1.0.0.1.1
.......0.1.0.0.0.1.0
......1.0.0.0.0.0.1.0
.....1.1.1.0.0.0.1.0.0
....0.0.0.1.1.1.0.1.0.0
...0.0.0.0.0.1.0.1.1.0.0
CROSSREFS
Sequence in context: A155417 A155416 A155391 * A155359 A098481 A155334
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved