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A155228
Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,1 3,0 polyhexes in any orientation on a planar nXnXn triangular grid.
0
1, 13, 37, 106, 1005, 10898, 103861, 1556609, 33473058, 935408536, 32508382331, 1526329950979, 97248083092281, 8153227821911786
OFFSET
3,2
EXAMPLE
Maximal 10 X 10 X 10 example
............0
...........1.1
..........1.1.0
.........1.0.0.1
........0.0.0.1.1
.......1.1.1.0.1.0
......1.1.0.0.1.0.1
.....0.0.0.1.0.0.0.1
....1.1.0.0.1.1.0.1.1
...0.1.1.1.0.1.1.0.1.0
CROSSREFS
Sequence in context: A183339 A331763 A155263 * A126367 A139926 A155259
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved