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A155378 Number of ways to place zero or more nonadjacent 1,1 2,0 2,1 3,1 3,2 4,2 4,3 5,2 polyhexes in any orientation on a planar nXnXn triangular grid. 0

%I #3 Mar 31 2012 12:35:23

%S 1,7,19,37,67,314,2337,14010,66473,405331,3843288,47944694,600390745,

%T 7673166649,120741723116,2464557255202

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

%e Maximal 10 X 10 X 10 example

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

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

%e ..........1.0.0

%e .........0.1.1.1

%e ........0.1.1.1.0

%e .......0.0.0.0.1.0

%e ......0.0.1.0.0.0.1

%e .....1.1.1.0.1.1.1.0

%e ....0.1.1.1.0.1.1.1.0

%e ...0.1.0.0.0.1.0.0.0.0

%K nonn

%O 5,2

%A _R. H. Hardin_ Jan 22 2009

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Last modified March 28 16:12 EDT 2024. Contains 371254 sequences. (Running on oeis4.)