A155447 - OEIS

A155447

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

1, 7, 19, 37, 61, 248, 1219, 8302, 40919, 212586, 1454728, 13983083, 157730943, 1851906541, 23225168793, 351573878630, 6540083828707

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

OFFSET

6,2

LINKS

EXAMPLE

Maximal 11 X 11 X 11 example

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

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

...........0.0.1

..........0.1.1.0

.........1.1.1.0.0

........0.0.0.1.0.0

.......0.0.1.0.1.0.1

......0.1.1.0.0.0.1.0

.....1.1.1.0.1.1.1.0.0

....0.0.0.1.0.0.1.1.0.0

...0.0.0.0.1.0.0.0.1.0.0

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved