A155227 - OEIS

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A155227

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

1, 7, 19, 37, 161, 1807, 11923, 74305, 996497, 20101489, 343266000, 7112429890, 240727989195, 10493604835431, 491234457919198, 29614138644308932, 2497584802462395442

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

OFFSET

3,2

LINKS

Table of n, a(n) for n=3..19.

EXAMPLE

Maximal 10 X 10 X 10 example

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

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

..........1.1.1

.........0.1.0.0

........1.0.0.1.1