Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #3 Mar 31 2012 12:35:22
%S 1,7,19,37,182,814,3007,16060,115416,773749,6226900,66290928,740922136
%N Number of ways to place zero or more nonadjacent 1,1 2,1 3,1 4,1 5,0 5,1 6,2 polyhexes in any orientation on a planar nXnXn triangular grid.
%e Maximal 10 X 10 X 10 example
%e ............0
%e ...........1.0
%e ..........0.1.1
%e .........0.1.0.0
%e ........0.1.0.0.1
%e .......0.1.0.1.1.0
%e ......0.1.0.0.0.1.0
%e .....1.0.0.0.0.0.1.0
%e ....0.1.1.1.1.1.0.1.0
%e ...0.1.0.0.0.0.0.0.1.0
%K nonn
%O 6,2
%A _R. H. Hardin_ Jan 22 2009