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A155332 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. 0

%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

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Last modified March 29 10:22 EDT 2024. Contains 371268 sequences. (Running on oeis4.)