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A155434
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Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,2 3,0 4,0 5,1 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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%I #3 Mar 31 2012 12:35:23
%S 1,7,19,37,67,293,1143,6649,34591,193101,1138893,9302387,87311631,
%T 959238749,11114012263,149535615901,2269866358921
%N Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,2 3,0 4,0 5,1 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.
%e Maximal 10 X 10 X 10 example
%e ............0
%e ...........1.1
%e ..........0.0.1
%e .........0.0.1.0
%e ........1.0.1.0.0
%e .......0.1.1.0.1.1
%e ......0.0.0.0.1.0.1
%e .....1.1.1.1.0.0.0.1
%e ....1.0.0.0.1.0.0.0.1
%e ...0.1.0.0.1.0.0.1.1.0
%K nonn
%O 5,2
%A _R. H. Hardin_ Jan 22 2009
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