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A155336 Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,0 4,1 5,2 5,3 polyhexes in any orientation on a planar n X n X n triangular grid. 0
1, 7, 19, 43, 112, 333, 1722, 11278, 66471, 421203, 3100169, 28603780, 333898461, 4399044128, 64174608851 (list; graph; refs; listen; history; text; internal format)
OFFSET
5,2
LINKS
EXAMPLE
Maximal 11 X 11 X 11 example
.............0
............0.0
...........1.1.1
..........1.0.0.1
.........0.0.0.0.1
........0.0.0.0.1.0
.......1.1.0.0.0.0.0
......1.0.0.1.0.1.1.1
.....1.0.0.1.0.1.0.0.1
....0.1.0.0.1.0.0.1.0.1
...0.0.1.1.0.1.1.1.0.1.0
CROSSREFS
Sequence in context: A155275 A155268 A124700 * A155427 A155403 A155350
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 22 2009
STATUS
approved

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Last modified June 25 01:29 EDT 2024. Contains 373691 sequences. (Running on oeis4.)