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%I #3 Mar 31 2012 12:35:22
%S 1,13,37,73,309,2413,28031,212649,2010251,29604759,633868196,
%T 15160513746,396011442436,13223926465865,597617100526032
%N Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 3,1 4,2 4,3 polyhexes in any orientation on a planar nXnXn triangular grid.
%e Maximal 11 X 11 X 11 example
%e .............0
%e ............1.0
%e ...........1.1.1
%e ..........0.0.0.1
%e .........0.1.0.1.0
%e ........1.1.1.0.0.0
%e .......1.0.0.0.0.1.1
%e ......0.1.0.1.1.0.0.1
%e .....1.0.0.0.0.1.0.1.0
%e ....1.1.0.1.0.1.0.1.1.0
%e ...0.0.1.1.0.1.1.0.0.0.0
%K nonn
%O 4,2
%A _R. H. Hardin_ Jan 22 2009
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