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Search: id:A032169
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| A032169 |
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Number of aperiodic necklaces of n beads of 2 colors, 11 of them black. |
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+0
3
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| 1, 6, 26, 91, 273, 728, 1768, 3978, 8398, 16796, 32065, 58786, 104006, 178296, 297160, 482885, 766935, 1193010, 1820910, 2731365, 4032015, 5864749, 8414640, 11920740, 16689036, 23107896, 31666376, 42975796
(list; graph; listen)
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OFFSET
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12,2
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LINKS
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C. G. Bower, Transforms (2)
F. Ruskey, Necklaces, Lyndon words, De Bruijn sequences, etc.
Index entries for sequences related to Lyndon words
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FORMULA
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"CHK[ 11 ]" (necklace, identity, unlabeled, 11 parts) transform of 1, 1, 1, 1...
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CROSSREFS
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A column of triangle A011847.
Sequence in context: A094162 A060101 A036422 this_sequence A032196 A011780 A036631
Adjacent sequences: A032166 A032167 A032168 this_sequence A032170 A032171 A032172
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KEYWORD
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nonn
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AUTHOR
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Christian G. Bower (bowerc(AT)usa.net)
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