A155411 - OEIS

A155411

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

1, 7, 19, 37, 76, 258, 1393, 9223, 50174, 277825, 1912295, 17811734, 207588822, 2624271308, 35563828726, 553613643453

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

OFFSET

5,2

LINKS

EXAMPLE

Maximal 10 X 10 X 10 example

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

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

..........1.1.0

.........1.0.1.1

........0.0.1.0.1

.......1.1.0.0.1.0

......1.0.0.0.0.0.1

.....0.1.1.0.0.1.0.1

....0.1.0.0.1.0.1.1.0

...0.0.1.1.0.1.1.0.0.0

CROSSREFS

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Jan 22 2009

STATUS

approved