A155310 - OEIS

A155310

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

1, 7, 25, 55, 184, 1073, 8931, 73812, 639377, 7143496, 110082014, 2154472585, 48658986855, 1307630014597

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

OFFSET

4,2

LINKS

EXAMPLE

Maximal 12 X 12 X 12 example

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

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

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

...........0.1.0.0

..........1.1.0.0.1

.........0.0.0.1.1.0

........0.0.1.0.0.1.0

.......1.1.1.0.1.0.1.1

......1.0.0.1.0.1.0.0.0

.....0.0.1.0.0.1.0.1.0.0

....1.1.1.0.1.1.0.0.1.1.1

...1.0.0.1.0.0.1.0.1.0.0.1

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved