A155226 - OEIS

A155226

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

1, 7, 19, 58, 329, 2350, 20015, 218371, 3090717, 58164789, 1393078738, 42785732400, 1703751776933, 87700729777393, 5826804979644472

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

OFFSET

3,2

LINKS

EXAMPLE

Maximal 11 X 11 X 11 example

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

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

...........0.1.1

..........1.0.0.1

.........1.0.0.0.0

........0.1.0.0.1.1

.......0.1.0.1.1.0.0

......1.0.0.0.0.0.1.1

.....1.0.1.0.0.1.1.0.0

....0.1.0.1.1.0.0.0.1.1

...0.1.0.0.0.1.0.1.1.0.0

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved