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Search: id:A032166
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| A032166 |
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Number of aperiodic necklaces of n beads of 11 colors. |
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+0
2
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| 11, 55, 440, 3630, 32208, 295020, 2783880, 26793030, 261994040, 2593726344, 25937424600, 261535549220, 2655593241840, 27124986721140, 278483211283552, 2871858103075830, 29732178147017280
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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C. G. Bower, Transforms (2)
Y. Puri and T. Ward, Arithmetic and growth of periodic orbits, J. Integer Seqs., Vol. 4 (2001), #01.2.1.
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" (necklace, identity, unlabeled) transform of 11, 0, 0, 0...
Sum mu(d)*11^(n/d)/n; d|n.
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CROSSREFS
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Sequence in context: A022606 A072025 A098992 this_sequence A099532 A041226 A042503
Adjacent sequences: A032163 A032164 A032165 this_sequence A032167 A032168 A032169
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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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