A155228 - OEIS

A155228

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

1, 13, 37, 106, 1005, 10898, 103861, 1556609, 33473058, 935408536, 32508382331, 1526329950979, 97248083092281, 8153227821911786

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

OFFSET

3,2

LINKS

EXAMPLE

Maximal 10 X 10 X 10 example

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

...........1.1

..........1.1.0

.........1.0.0.1

........0.0.0.1.1

.......1.1.1.0.1.0

......1.1.0.0.1.0.1

.....0.0.0.1.0.0.0.1

....1.1.0.0.1.1.0.1.1

...0.1.1.1.0.1.1.0.1.0

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved