|
A155442
|
|
Number of ways to place zero or more nonadjacent 1,0 2,0 2,2 3,1 3,2 4,1 5,1 6,1 polyhexes in any orientation on a planar nXnXn triangular grid.
|
|
0
|
|
|
%I #3 Mar 31 2012 12:35:23
%S 1,7,19,37,124,550,2077,9417,59328,393791,2721517,23341616,236771490,
%T 2617082602
%N Number of ways to place zero or more nonadjacent 1,0 2,0 2,2 3,1 3,2 4,1 5,1 6,1 polyhexes in any orientation on a planar nXnXn triangular grid.
%e Maximal 11 X 11 X 11 example
%e .............0
%e ............1.0
%e ...........1.0.1
%e ..........0.1.1.0
%e .........0.1.0.0.0
%e ........0.1.0.0.1.0
%e .......0.1.0.0.0.1.0
%e ......0.0.0.0.0.0.1.0
%e .....1.1.0.0.0.0.0.1.1
%e ....0.0.1.1.1.1.0.1.0.1
%e ...0.1.1.0.0.0.0.0.1.0.0
%K nonn
%O 6,2
%A _R. H. Hardin_ Jan 22 2009
|
