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A155357
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Number of ways to place zero or more nonadjacent 1,0 1,1 2,0 2,1 3,0 3,1 4,0 4,1 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 7, 19, 37, 209, 927, 4735, 37071, 286745, 2579963, 31707495, 434469270, 7173015390, 147194484531, 3498010136593
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OFFSET
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4,2
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COMMENTS
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Same series for 0,0 1,0 2,1 2,2 3,3 4,3 polyhexes.
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LINKS
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EXAMPLE
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Maximal 11 X 11 X 11 example
.............0
............0.0
...........0.1.1
..........0.0.1.1
.........1.1.0.1.1
........1.1.0.0.1.1
.......1.1.0.0.0.0.0
......1.1.0.1.1.0.1.1
.....0.0.0.0.1.1.0.1.1
....1.1.1.1.0.1.1.0.1.1
...0.1.1.1.1.0.1.1.0.1.1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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