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A155394 Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 4,2 4,3 5,2 6,2 polyhexes in any orientation on a planar nXnXn triangular grid. 0

%I

%S 1,7,19,37,67,219,1086,6381,31966,154641,952314,7600004,73667522,

%T 781898311,8779500403

%N Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 4,2 4,3 5,2 6,2 polyhexes in any orientation on a planar nXnXn triangular grid.

%e Maximal 11 X 11 X 11 example

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

%e ............1.0

%e ...........0.1.0

%e ..........0.0.1.1

%e .........0.1.1.0.0

%e ........0.0.0.1.0.0

%e .......0.0.1.0.1.0.0

%e ......1.0.1.0.0.0.1.0

%e .....0.1.1.0.1.1.1.0.0

%e ....0.1.0.1.0.0.0.1.1.1

%e ...0.1.0.0.0.0.0.1.0.0.0

%K nonn

%O 6,2

%A _R. H. Hardin_ Jan 22 2009

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Last modified December 3 15:12 EST 2022. Contains 358534 sequences. (Running on oeis4.)