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A155247 Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,2 4,2 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 7, 19, 43, 187, 1189, 7473, 55294, 540344, 6609867, 96912191, 1762761733, 39425343425, 1088609961302 (list; graph; refs; listen; history; text; internal format)
OFFSET
4,2
LINKS
EXAMPLE
Maximal 11 X 11 X 11 example
.............0
............0.0
...........0.1.1
..........0.1.0.0
.........1.1.0.0.0
........0.0.0.0.0.0
.......1.0.1.0.1.0.1
......0.1.0.1.0.1.0.1
.....0.1.0.1.0.1.0.1.0
....0.1.0.1.0.1.0.1.0.0
...0.0.1.0.1.0.1.0.1.0.0
CROSSREFS
Sequence in context: A155312 A155351 A155430 * A113927 A155399 A330854
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 22 2009
STATUS
approved

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)