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A155282 Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 4,1 5,1 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 13, 37, 201, 1391, 8373, 61097, 625360, 7715937, 116261530, 2213148571 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,2

LINKS

Table of n, a(n) for n=5..15.

EXAMPLE

Maximal 12 X 12 X 12 example

..............0

.............0.1

............1.1.0

...........1.0.0.1

..........1.0.1.1.0

.........1.0.1.0.0.0

........0.0.1.0.1.0.1

.......0.0.1.0.0.1.0.1

......1.1.0.0.0.0.1.0.1

.....0.0.1.1.1.1.0.1.0.1

....1.1.0.0.0.0.0.1.0.1.0

...0.0.1.1.1.1.0.0.1.0.1.0

CROSSREFS

Sequence in context: A155241 A155222 A155283 * A193646 A155236 A155277

Adjacent sequences: A155279 A155280 A155281 * A155283 A155284 A155285

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 22 2009

STATUS

approved

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Last modified February 1 17:02 EST 2023. Contains 359993 sequences. (Running on oeis4.)