id:A074654 - OEIS Search Results

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Number of Lyndon words (aperiodic necklaces) with 5n beads of 5 colors, n beads of each color. One color labeled, the other 4 unlabeled.

+0
3

1, 472, 467133, 636541920, 1038934571875, 1903991899195896, 3782689379194538057, 7975744222034262960000, 17602442780233361771120400, 40278979798251016073962405000 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Index entries for sequences related to Lyndon words`
	FORMULA	`1/(120n) * sum over d\|n of {mu(n/d) * (5d)! / d!^5}.`
	CROSSREFS	`Inverse Witt transform of A006180.` `Sequence in context: A138132 A034284 A006180 this_sequence A157434 A084629 A075286` `Adjacent sequences: A074651 A074652 A074653 this_sequence A074655 A074656 A074657`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Aug 29 2002`

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.

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