A155330
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 4,0 5,0 6,0 polyhexes in any orientation on a planar nXnXn triangular grid.
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%I #3 Mar 31 2012 12:35:22
%S 1,4,10,45,176,869,4190,22684,124296,845950,6444330,59042752
%N Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 4,0 5,0 6,0 polyhexes in any orientation on a planar nXnXn triangular grid.
%e Maximal 9 X 9 X 9 example
%e ...........1
%e ..........1.0
%e .........1.0.1
%e ........1.0.0.1
%e .......1.0.0.0.1
%e ......1.0.0.0.0.1
%e .....1.0.0.0.0.0.1
%e ....0.0.0.0.0.0.0.1
%e ...1.1.1.1.1.1.1.0.1
%K nonn
%O 6,2
%A _R. H. Hardin_ Jan 22 2009
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