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A155407
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Number of ways to place zero or more nonadjacent 0,0 1,0 2,1 2,2 3,1 3,2 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, 49, 162, 562, 3016, 16877, 98214, 637805, 5164375, 49219867, 557800561, 7204177132, 106101558795
(list; graph; refs; listen; history; internal format)
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