|
%I #3 Mar 31 2012 12:35:23
%S 1,3,7,13,23,37,183,1053,5351,24397,99215,617661,5897471,64288141,
%T 714391583,7672307261,95370104207,1561595349917,31946273565055
%N Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 2,2 3,0 3,1 3,3 polyhexes in any orientation on a planar nXnXn triangular grid.
%e Maximal 10 X 10 X 10 example
%e ............1
%e ...........1.0
%e ..........0.1.1
%e .........1.1.0.1
%e ........0.0.0.0.0
%e .......0.1.0.1.1.0
%e ......1.0.1.1.0.0.1
%e .....0.1.0.0.1.0.1.0
%e ....1.1.0.0.1.0.0.1.1
%e ...1.0.1.1.0.0.1.1.0.1
%K nonn
%O 3,2
%A _R. H. Hardin_ Jan 22 2009
|
