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A155222 Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,0 polyhexes in any orientation on a planar nXnXn triangular grid. 0

%I #3 Mar 31 2012 12:35:22

%S 1,13,37,184,1433,15532,213600,3754855,93144364,3159998575,

%T 143228568126,8737142545792,720729233703571

%N Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 3,0 polyhexes in any orientation on a planar nXnXn triangular grid.

%e Maximal 12 X 12 X 12 example

%e ..............0

%e .............1.1

%e ............0.0.1

%e ...........1.0.0.1

%e ..........1.0.0.0.0

%e .........0.1.0.0.1.1

%e ........1.0.1.0.1.0.0

%e .......0.1.0.0.1.0.1.0

%e ......0.0.1.1.0.0.1.0.1

%e .....1.1.0.0.0.1.1.0.0.1

%e ....1.0.0.0.1.0.0.0.1.0.1

%e ...1.0.1.1.1.0.1.1.1.0.1.0

%K nonn

%O 3,2

%A _R. H. Hardin_ Jan 22 2009

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)