A074654 Number of Lyndon words (aperiodic necklaces) with 5n beads of 5 colors, n beads of each color. One color labeled, the other 4 unlabeled.

1, 472, 467133, 636541920, 1038934571875, 1903991899195896, 3782689379194538057, 7975744222034262960000, 17602442780233361771120400, 40278979798251016073962405000

Offset: 1

Author

Christian G. Bower, Aug 29 2002

Keywords

• nonn

Links

• Index entries for sequences related to Lyndon words

Crossrefs

Inverse Witt transform of A006180.

Formula

1/(120n) * sum over d|n of {mu(n/d) * (5d)! / d!^5}.