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Search: id:A155443
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| A155443 |
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Number of ways to place zero or more nonadjacent 2,1 3,0 3,1 4,2 4,3 4,4 5,2 6,2 polyhexes in any orientation on a planar nXnXn triangular grid. |
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+0
1
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| 1, 7, 19, 37, 61, 156, 946, 6587, 32063, 128930, 679319, 5663620, 64380331, 713842124, 7200710477, 81450733059, 1198927050536
(list; graph; listen)
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OFFSET
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6,2
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EXAMPLE
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Maximal 11 X 11 X 11 example
.............0
............0.0
...........0.1.0
..........0.0.1.1
.........1.1.1.0.0
........0.0.0.1.0.0
.......0.0.1.0.1.0.1
......1.0.1.0.0.0.1.0
.....0.1.1.0.1.1.1.0.0
....0.1.0.1.0.0.0.1.1.0
...0.0.0.0.1.0.0.1.0.0.0
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CROSSREFS
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Sequence in context: A133323 A002407 A098484 this_sequence A155405 A155448 A155446
Adjacent sequences: A155440 A155441 A155442 this_sequence A155444 A155445 A155446
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net) Jan 22 2009
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