A155435 - OEIS

A155435

Number of ways to place zero or more nonadjacent 2,1 2,2 3,0 3,1 3,3 4,2 4,3 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.

1, 4, 13, 28, 49, 105, 852, 6079, 29814, 128372, 780418, 9582912, 132900511, 1524452541, 17253579386, 257451880786, 5763064779401, 154341468962518

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

OFFSET

4,2

LINKS

EXAMPLE

Maximal 9 X 9 X 9 example

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

..........1.0

.........0.1.1

........1.1.0.1

.......0.0.1.1.0

......1.1.0.0.0.1

.....1.0.1.0.1.1.0

....0.1.1.0.1.0.1.1

...0.1.0.1.0.1.1.0.0

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved