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A155400 Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 3,1 4,2 5,2 6,2 6,3 polyhexes in any orientation on a planar nXnXn triangular grid. 0

%I #3 Mar 31 2012 12:35:23

%S 1,7,19,37,106,414,1792,8692,50965,347596,2639357,22946779,235883238,

%T 2823234704

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

%e Maximal 11 X 11 X 11 example

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

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

%e ...........0.0.1

%e ..........0.0.1.1

%e .........0.1.1.0.0

%e ........1.1.0.0.1.1

%e .......0.1.0.0.0.1.0

%e ......1.0.0.0.0.0.1.0

%e .....1.1.1.0.0.0.1.0.0

%e ....0.0.0.1.1.1.0.1.0.0

%e ...0.0.0.0.0.1.0.1.1.0.0

%K nonn

%O 6,2

%A _R. H. Hardin_ Jan 22 2009

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)