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A155383 Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 4,1 4,2 5,1 6,1 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 4, 10, 19, 52, 161, 487, 1787, 8270, 41329, 223486, 1401458, 9925976, 78514707, 707922309, 7286793032 (list; graph; refs; listen; history; text; internal format)
OFFSET
6,2
LINKS
EXAMPLE
Maximal 11 X 11 X 11 example
.............0
............1.0
...........0.1.0
..........0.0.1.1
.........0.0.1.1.0
........0.1.0.0.1.0
.......0.1.0.0.0.1.0
......1.1.0.0.0.0.0.0
.....0.1.1.0.0.0.1.0.0
....0.1.0.0.1.1.1.1.1.1
...0.1.0.0.0.0.0.1.0.0.0
CROSSREFS
Sequence in context: A155322 A251176 A155428 * A155229 A155220 A300018
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved

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Last modified July 21 09:38 EDT 2024. Contains 374472 sequences. (Running on oeis4.)