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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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2
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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; refs; listen; history; internal format)
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OFFSET
| 12,2
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LINKS
| 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
| "CHK[ 11 ]" (necklace, identity, unlabeled, 11 parts) transform of 1, 1, 1, 1...
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CROSSREFS
| A column of triangle A011847.
Sequence in context: A060101 A036422 A166214 * A032196 A011780 A036631
Adjacent sequences: A032166 A032167 A032168 * A032170 A032171 A032172
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KEYWORD
| nonn
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AUTHOR
| Christian G. Bower (bowerc(AT)usa.net)
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