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A155334 Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 3,1 4,2 5,2 5,3 polyhexes in any orientation on a planar nXnXn triangular grid. 0

%I

%S 1,7,19,37,115,485,2457,16347,114526,862126,8042696,92458257,

%T 1277007692,21027306771,403213961051,9036952144101

%N Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 3,1 4,2 5,2 5,3 polyhexes in any orientation on a planar nXnXn triangular grid.

%e Maximal 12 X 12 X 12 example

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

%e .............0.0

%e ............0.0.0

%e ...........0.0.0.0

%e ..........1.1.0.1.1

%e .........0.1.0.0.1.0

%e ........0.1.0.0.0.1.0

%e .......0.0.1.0.0.1.0.0

%e ......1.0.1.1.0.1.1.0.1

%e .....1.1.0.0.0.0.0.0.1.1

%e ....0.0.1.1.1.0.1.1.1.0.0

%e ...0.0.0.0.1.0.0.1.0.0.0.0

%K nonn

%O 5,2

%A _R. H. Hardin_ Jan 22 2009

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Last modified May 9 12:26 EDT 2021. Contains 343740 sequences. (Running on oeis4.)