|
|
A155268
|
|
Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 3,2 3,3 polyhexes in any orientation on a planar nXnXn triangular grid.
|
|
0
|
|
|
1, 7, 19, 43, 106, 668, 7101, 59172, 470802, 4838017, 83647134, 1916327385, 46633700220, 1291488803553, 46130099469946
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
3,2
|
|
COMMENTS
|
Same series for 1,1 2,1 2,2 3,0 3,1 3,3 polyhexes.
Same series for 0,0 1,0 1,1 2,0 2,2 3,0 polyhexes.
|
|
LINKS
|
|
|
EXAMPLE
|
Maximal 12 X 12 X 12 example
..............1
.............0.1
............1.1.1
...........0.0.0.1
..........0.0.0.0.0
.........1.0.0.0.0.1
........0.1.0.0.0.0.1
.......1.1.1.1.0.1.1.1
......0.0.0.0.0.0.0.0.1
.....1.0.1.1.1.1.0.1.0.0
....0.1.0.0.1.0.0.0.1.0.0
...1.1.1.1.0.1.0.1.1.1.1.0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|