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A155335 Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 4,1 5,2 6,3 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 7, 19, 58, 199, 688, 3581, 19670, 126183, 979162, 8439890, 86791208, 1020461563 (list; graph; refs; listen; history; text; internal format)
OFFSET
6,2
LINKS
EXAMPLE
Maximal 12 X 12 X 12 example
..............1
.............0.1
............1.0.1
...........1.0.1.0
..........1.0.0.1.0
.........0.1.0.1.0.1
........0.1.0.1.0.0.1
.......0.0.1.0.0.0.0.1
......1.0.0.1.0.0.0.1.0
.....0.1.0.0.0.0.0.0.1.0
....0.0.1.1.0.0.0.0.1.0.0
...0.0.0.0.1.1.1.0.1.0.0.0
CROSSREFS
Sequence in context: A069005 A000413 A263335 * A155226 A229442 A179406
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved

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Last modified June 19 02:16 EDT 2024. Contains 373492 sequences. (Running on oeis4.)