|
| |
|
|
A155444
|
|
Number of ways to place zero or more nonadjacent 2,0 3,0 4,1 4,2 4,3 4,4 5,1 6,2 polyhexes in any orientation on a planar nXnXn triangular grid.
|
|
0
| |
|
|
1, 7, 19, 37, 61, 215, 976, 6510, 31895, 148311, 835105, 6965183, 70259384, 771053702, 8287139754, 101882179551
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 6,2
|
|
|
EXAMPLE
| Maximal 11 X 11 X 11 example
.............0
............0.0
...........1.0.0
..........1.0.0.0
.........0.1.1.1.1
........0.1.0.0.0.0
.......1.0.1.0.1.0.0
......0.1.0.0.0.1.0.0
.....0.0.1.0.1.0.1.0.1
....0.0.0.1.1.0.0.1.1.0
...0.0.1.1.0.0.1.1.0.0.0
|
|
|
CROSSREFS
| Sequence in context: A155446 A155372 A155373 * A155439 A155441 A155447
Adjacent sequences: A155441 A155442 A155443 * A155445 A155446 A155447
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| R. H. Hardin (rhhardin(AT)att.net) Jan 22 2009
|
| |
|
|
