A155242 - OEIS

A155242

Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 4,2 polyhexes in any orientation on a planar nXnXn triangular grid.

1, 7, 19, 70, 235, 1578, 9621, 89416, 823589, 11073433, 160764354, 3227749885, 73045396627, 2178986476482

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

OFFSET

4,2

LINKS

EXAMPLE

Maximal 11 X 11 X 11 example

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

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

...........1.1.1

..........0.0.0.1

.........1.1.1.0.1

........1.0.0.0.0.0

.......1.0.0.0.1.1.1

......0.0.0.0.0.0.0.1

.....1.0.1.1.1.0.1.0.1

....0.1.0.0.0.1.0.1.0.0

...0.0.1.1.1.0.1.0.1.1.1

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved