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A155227
Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 2,2 3,1 polyhexes in any orientation on a planar nXnXn triangular grid.
0
1, 7, 19, 37, 161, 1807, 11923, 74305, 996497, 20101489, 343266000, 7112429890, 240727989195, 10493604835431, 491234457919198, 29614138644308932, 2497584802462395442
OFFSET
3,2
EXAMPLE
Maximal 10 X 10 X 10 example
............0
...........1.0
..........1.1.1
.........0.1.0.0
........1.0.0.1.1
.......1.1.1.0.1.1
......0.1.0.0.1.0.0
.....1.0.0.1.0.0.1.0
....1.1.1.0.1.1.0.1.1
...0.1.0.0.1.1.0.1.1.0
CROSSREFS
Sequence in context: A217421 A155376 A155377 * A155319 A155318 A367649
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved