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A155433 Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,2 3,0 3,3 4,1 4,3 polyhexes in any orientation on a planar nXnXn triangular grid. 0

%I

%S 1,4,13,28,49,76,487,3766,20956,91261,385483,3099937,40032793,

%T 511624885,5661397930,61479664849,927273309259,20003424034360,

%U 509150633289499,13132668672579046,346049894030528596

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

%e Maximal 10 X 10 X 10 example

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

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

%e ..........1.1.1

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

%e ........0.0.0.1.0

%e .......0.0.1.1.0.0

%e ......1.1.0.0.0.1.1

%e .....1.0.0.0.0.0.0.1

%e ....1.0.0.1.0.1.0.0.1

%e ...0.1.1.1.0.0.1.1.1.0

%K nonn

%O 4,2

%A _R. H. Hardin_ Jan 22 2009

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Last modified October 2 01:30 EDT 2022. Contains 357191 sequences. (Running on oeis4.)