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A155403 Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 4,2 5,3 6,3 7,3 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 7, 19, 43, 130, 472, 2062, 9990, 51107, 296798, 2149983, 17713635 (list; graph; refs; listen; history; text; internal format)
OFFSET
7,2
LINKS
EXAMPLE
Maximal 10 X 10 X 10 example
............0
...........0.0
..........0.0.0
.........1.0.0.0
........0.1.0.0.0
.......1.0.1.1.1.1
......0.1.0.0.0.0.1
.....0.0.1.1.1.1.0.1
....0.0.0.0.0.0.1.0.0
...0.0.0.0.0.0.0.1.0.0
CROSSREFS
Sequence in context: A124700 A155336 A155427 * A155350 A155312 A155351
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved

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Last modified July 21 08:35 EDT 2024. Contains 374463 sequences. (Running on oeis4.)