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A155338 Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 4,2 5,2 6,2 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 7, 19, 64, 199, 919, 4123, 24600, 145752, 1212971, 10549470, 114622513 (list; graph; refs; listen; history; text; internal format)
OFFSET
6,2
LINKS
EXAMPLE
Maximal 11 X 11 X 11 example
.............0
............0.0
...........1.0.0
..........0.1.0.0
.........0.0.1.1.1
........0.0.0.0.0.1
.......0.0.1.0.0.0.1
......0.0.1.0.0.0.0.0
.....1.1.1.0.0.0.1.1.1
....1.0.0.0.0.0.1.0.0.0
...1.0.0.0.1.1.1.0.0.0.0
CROSSREFS
Sequence in context: A165683 A092359 A259797 * A155401 A346851 A155384
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved

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Last modified June 24 23:28 EDT 2024. Contains 373691 sequences. (Running on oeis4.)