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A155426
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 3,2 4,0 4,1 4,2 5,0 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 4, 10, 22, 55, 188, 612, 2433, 12227, 68641, 419235, 2949869, 24062426, 221080988, 2326692356
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