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A155382
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 2,1 3,2 4,2 4,3 4,4 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 4, 10, 22, 40, 141, 496, 2636, 13567, 76878, 469481, 3693548, 33420872, 360497441, 4317343069, 60086409152
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