|
| |
|
|
A155440
|
|
Number of ways to place zero or more nonadjacent 1,0 2,0 2,2 3,0 3,2 4,1 4,2 5,1 polyhexes in any orientation on a planar nXnXn triangular grid.
|
|
0
| |
|
|
1, 7, 19, 37, 76, 332, 1823, 10749, 53165, 313295, 2436626, 24495034, 277288339, 3304478802, 44732292922, 736452039398
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 5,2
|
|
|
COMMENTS
| Same series for 1,1 2,0 2,1 3,2 3,3 4,2 4,3 5,4 polyhexes.
|
|
|
EXAMPLE
| Maximal 10 X 10 X 10 example
............0
...........0.1
..........1.0.1
.........0.1.0.1
........0.0.1.1.0
.......0.1.0.0.1.0
......1.1.0.0.0.0.0
.....1.0.1.0.0.1.1.1
....1.0.1.0.1.1.0.0.0
...0.0.1.0.0.0.1.1.1.0
|
|
|
CROSSREFS
| Sequence in context: A155396 A155411 A155436 * A155327 A155363 A155395
Adjacent sequences: A155437 A155438 A155439 * A155441 A155442 A155443
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| R. H. Hardin (rhhardin(AT)att.net) Jan 22 2009
|
| |
|
|
