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A032168
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Number of aperiodic necklaces of n beads of 2 colors, 10 of them black.
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1
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1, 5, 22, 70, 200, 497, 1144, 2424, 4862, 9225, 16796, 29372, 49742, 81686, 130750, 204248, 312455, 468611, 690690, 1001400, 1430715, 2015871, 2804880, 3856528, 5245125, 7060508, 9414328, 12440056, 16301164
(list; graph; refs; listen; history; internal format)
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OFFSET
| 11,2
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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[ 10 ]" (necklace, identity, unlabeled, 10 parts) transform of 1, 1, 1, 1...
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CROSSREFS
| Sequence in context: A033445 A050533 A064836 * A000345 A011846 A058750
Adjacent sequences: A032165 A032166 A032167 * A032169 A032170 A032171
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KEYWORD
| nonn
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AUTHOR
| Christian G. Bower (bowerc(AT)usa.net)
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