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A155262
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Number of ways to place zero or more nonadjacent 1,1 2,1 2,2 3,0 3,1 4,2 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 13, 37, 73, 270, 3023, 31666, 204526, 1765714, 30617532, 748500437, 15766186082, 363909913887, 12760152079877, 642694450893529
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