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A155427 Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,2 4,2 5,3 6,4 7,4 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 7, 19, 43, 130, 466, 1972, 9920, 52566, 311924, 2236063, 18426118 (list; graph; refs; listen; history; text; internal format)
OFFSET
7,2
LINKS
EXAMPLE
Maximal 10 X 10 X 10 example
............0
...........0.0
..........1.0.1
.........0.1.0.1
........0.1.0.1.0
.......0.1.0.1.0.0
......0.0.1.0.1.0.0
.....0.0.1.0.1.0.0.0
....0.0.1.0.1.0.0.0.0
...0.0.0.1.0.1.0.0.0.0
CROSSREFS
Sequence in context: A155268 A124700 A155336 * A155403 A155350 A155312
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved

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Last modified July 25 15:15 EDT 2024. Contains 374611 sequences. (Running on oeis4.)