|
| |
|
|
A155349
|
|
Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,1 4,2 5,1 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.
|
|
0
| |
|
|
1, 7, 19, 37, 100, 428, 1794, 11180, 68280, 460602, 3595480, 35769940, 408682401, 5473453986, 84561686844
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 5,2
|
|
|
EXAMPLE
| Maximal 10 X 10 X 10 example
............0
...........1.0
..........1.0.0
.........0.1.1.1
........0.0.0.0.1
.......0.1.0.0.1.0
......0.0.1.0.0.0.0
.....1.1.1.0.0.0.1.1
....1.0.0.0.1.0.1.0.1
...0.1.0.0.0.1.1.0.0.0
|
|
|
CROSSREFS
| Sequence in context: A155431 A155329 A155424 * A155437 A155299 A155379
Adjacent sequences: A155346 A155347 A155348 * A155350 A155351 A155352
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| R. H. Hardin (rhhardin(AT)att.net) Jan 22 2009
|
| |
|
|
