id:A074655 - OEIS Search Results

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Number of Lyndon words (aperiodic necklaces) with 3n beads of 3 colors, n beads of each color.

+0
2

2, 14, 186, 2880, 50450, 952854, 19003474, 394394880, 8439756660, 185033201150, 4137181680698, 94020326259264, 2166105078791446, 50489825369325118, 1188777328563863850, 28236363841594782720 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Index entries for sequences related to Lyndon words`
	FORMULA	`1/(3n) * sum over d\|n of {mu(n/d) * (3d)! / d!^3}.`
	CROSSREFS	`a(n)=A029808(n)*2. a(n) = A074651(n)/3.` `Sequence in context: A046247 A109520 A000807 this_sequence A067902 A132611 A047796` `Adjacent sequences: A074652 A074653 A074654 this_sequence A074656 A074657 A074658`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Aug 29 2002`

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Last modified September 7 23:08 EDT 2008. Contains 143486 sequences.

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