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A155284
Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 3,1 4,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
0
1, 13, 37, 73, 309, 2413, 28031, 212649, 2010251, 29604759, 633868196, 15160513746, 396011442436, 13223926465865, 597617100526032
OFFSET
4,2
EXAMPLE
Maximal 11 X 11 X 11 example
.............0
............1.0
...........1.1.1
..........0.0.0.1
.........0.1.0.1.0
........1.1.1.0.0.0
.......1.0.0.0.0.1.1
......0.1.0.1.1.0.0.1
.....1.0.0.0.0.1.0.1.0
....1.1.0.1.0.1.0.1.1.0
...0.0.1.1.0.1.1.0.0.0.0
CROSSREFS
Sequence in context: A155285 A155262 A155301 * A155304 A183454 A155265
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved