A155223 - OEIS

A155223

Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 polyhexes in any orientation on a planar nXnXn triangular grid.

1, 4, 10, 45, 176, 869, 5649, 44314, 456024, 5472215, 82109824, 1515983373, 34737855825, 992142189277

(list; graph; refs; listen; history; text; internal format)

OFFSET

3,2

LINKS

EXAMPLE

Maximal 12 X 12 X 12 example

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

.............1.0

............1.0.0

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

..........1.0.1.0.1

.........0.0.0.1.0.1

........1.0.1.0.1.0.1

.......1.0.1.0.0.1.0.0

......1.0.1.0.0.0.0.0.1

.....1.0.1.0.1.1.1.1.0.1

....0.0.0.0.0.0.0.0.0.0.1

...0.1.1.1.1.0.1.1.1.1.0.1

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved