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A155369 Number of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,1 3,1 3,2 4,1 4,3 polyhexes in any orientation on a planar nXnXn triangular grid. 0

%I

%S 1,4,10,22,40,103,496,3099,16980,88897,547244,4508233,48937458,

%T 595010305,7745612856,114311761273

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

%e Maximal 11 X 11 X 11 example

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

%e ............0.1

%e ...........0.1.0

%e ..........1.1.1.1

%e .........1.1.0.0.0

%e ........0.0.0.0.1.1

%e .......0.0.1.1.1.1.0

%e ......1.0.0.0.1.0.0.1

%e .....0.1.0.0.1.0.0.1.0

%e ....1.1.1.1.0.0.1.1.1.1

%e ...0.0.0.1.1.0.1.1.0.0.0

%K nonn

%O 4,2

%A _R. H. Hardin_ Jan 22 2009

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Last modified October 26 08:00 EDT 2021. Contains 348267 sequences. (Running on oeis4.)