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A155346 Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,1 4,1 5,2 5,3 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 7, 19, 37, 94, 330, 1713, 11184, 64025, 403539, 3128291, 30538252, 364356710, 4898497176, 73557982663 (list; graph; refs; listen; history; text; internal format)
OFFSET
5,2
LINKS
EXAMPLE
Maximal 12 X 12 X 12 example
..............0
.............0.0
............0.0.0
...........0.0.0.0
..........1.1.0.1.1
.........1.0.0.0.0.1
........0.1.0.0.0.1.0
.......0.1.0.0.0.0.1.0
......1.0.1.1.0.1.1.0.1
.....1.0.0.0.0.0.0.0.0.1
....0.1.1.0.1.0.1.0.1.1.0
...0.0.0.1.1.0.0.1.1.0.0.0
CROSSREFS
Sequence in context: A155425 A155410 A155429 * A155398 A155431 A155329
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved

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Last modified March 29 10:59 EDT 2024. Contains 371277 sequences. (Running on oeis4.)