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A155217
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Number of ways to place zero or more nonadjacent 1,0 1,1 2,1 polyhexes in any orientation on a planar nXnXn triangular grid.
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0
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1, 2, 5, 10, 39, 205, 1026, 7765, 81639, 968094, 15354634, 328541791, 8661897260, 294910384475, 13193215967675, 751461392973699, 54989669970520419, 5219343962387133501, 636712452891464320519, 99887383227114543133737
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OFFSET
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1,2
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LINKS
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EXAMPLE
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Maximal 13 X 13 X 13 example
...............1
..............1.1
.............0.0.0
............1.0.1.1
...........1.1.0.1.0
..........0.0.0.0.0.1
.........1.0.1.1.0.1.1
........1.1.0.1.0.0.0.0
.......0.0.0.0.0.1.1.0.1
......1.1.0.1.1.0.1.0.1.1
.....0.1.0.0.1.0.0.0.0.0.0
....1.0.0.1.0.0.1.0.1.1.0.1
...1.1.0.1.1.0.1.1.0.1.0.1.1
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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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