A155438 - OEIS

A155438

Number of ways to place zero or more nonadjacent 2,1 2,2 3,1 4,0 4,1 5,2 6,3 6,4 polyhexes in any orientation on a planar nXnXn triangular grid.

1, 7, 19, 37, 73, 192, 799, 5700, 31065, 143784, 760292, 5454945, 52282160, 593679020, 6642535818, 77363263396

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

OFFSET

6,2

LINKS

EXAMPLE

Maximal 11 X 11 X 11 example

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

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

...........1.0.0

..........0.1.1.1

.........0.1.0.0.1

........0.1.0.0.0.0

.......1.0.1.0.1.1.0

......1.0.0.0.0.0.1.0

.....0.1.0.0.1.0.0.1.1

....0.0.1.1.1.0.0.1.0.0

...0.0.1.0.0.0.1.1.0.0.0

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved