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A155396 Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 4,3 5,3 6,3 polyhexes in any orientation on a planar nXnXn triangular grid. 0
1, 7, 19, 37, 73, 277, 1483, 7857, 35137, 178868, 1263372, 11050443, 103009682, 1012635463 (list; graph; refs; listen; history; text; internal format)
OFFSET

6,2

LINKS

Table of n, a(n) for n=6..19.

EXAMPLE

Maximal 10 X 10 X 10 example

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

...........0.0

..........0.0.0

.........0.0.0.0

........0.1.1.1.0

.......0.1.0.0.0.0

......0.0.1.0.1.1.1

.....1.1.1.0.1.0.0.0

....0.0.0.0.0.1.0.0.0

...0.0.0.1.1.1.0.0.0.0

CROSSREFS

Sequence in context: A155434 A155378 A155438 * A155411 A155436 A155440

Adjacent sequences: A155393 A155394 A155395 * A155397 A155398 A155399

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 22 2009

STATUS

approved

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Last modified December 1 00:42 EST 2022. Contains 358453 sequences. (Running on oeis4.)