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A155379 Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 2,1 3,1 3,2 4,2 5,2 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 7, 19, 37, 100, 521, 3034, 15439, 84733, 680192, 6722018, 71127189, 839682580, 12147844032 (list; graph; refs; listen; history; text; internal format)
OFFSET
5,2
LINKS
EXAMPLE
Maximal 10 X 10 X 10 example
............0
...........0.0
..........1.0.0
.........0.1.1.1
........1.0.1.1.1
.......1.0.0.0.0.1
......1.1.0.0.0.0.0
.....0.1.1.0.1.1.1.0
....0.0.1.0.0.0.1.1.0
...0.0.1.0.0.0.0.1.1.1
CROSSREFS
Sequence in context: A155349 A155437 A155299 * A155243 A155417 A155416
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved

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Last modified July 20 20:50 EDT 2024. Contains 374459 sequences. (Running on oeis4.)