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A155342 Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,2 4,1 4,2 5,3 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 7, 19, 37, 82, 361, 2515, 15385, 83649, 564736, 5375347, 66177036, 879906596, 12668769870, 218134701822, 4684620580146 (list; graph; refs; listen; history; text; internal format)
OFFSET
5,2
COMMENTS
Same series for 1,1 2,0 2,1 3,1 3,2 4,1 4,2 5,3 polyhexes.
LINKS
EXAMPLE
Maximal 10 X 10 X 10 example
............0
...........0.0
..........0.1.0
.........1.0.1.1
........0.1.1.0.0
.......0.1.0.0.1.0
......1.0.0.0.0.1.1
.....0.1.1.0.0.1.0.0
....0.1.0.1.1.0.1.1.0
...0.0.0.1.0.0.1.0.0.0
CROSSREFS
Sequence in context: A155327 A155363 A155395 * A155408 A155358 A155353
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved

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Last modified July 12 08:07 EDT 2024. Contains 374239 sequences. (Running on oeis4.)