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A155446 Number of ways to place zero or more nonadjacent 2,0 3,1 3,2 4,1 4,3 4,4 5,2 6,2 polyhexes in any orientation on a planar nXnXn triangular grid. 0

%I

%S 1,7,19,37,61,198,961,7036,35739,164475,1020808,9067997,101564763,

%T 1167745653,13478588062,184107863480,3150709806656,65431262534013

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

%e Maximal 11 X 11 X 11 example

%e .............0

%e ............0.0

%e ...........1.0.0

%e ..........0.1.1.0

%e .........0.1.0.1.1

%e ........0.0.1.0.0.0

%e .......1.0.1.0.1.0.0

%e ......0.1.0.0.0.1.1.0

%e .....0.1.0.1.1.0.0.1.1

%e ....0.0.1.1.0.0.1.1.0.0

%e ...0.0.1.0.0.0.1.0.0.0.0

%K nonn

%O 6,2

%A _R. H. Hardin_ Jan 22 2009

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Last modified January 21 10:25 EST 2022. Contains 350477 sequences. (Running on oeis4.)