A032323 - OEIS

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A032323

Number of aperiodic necklaces with n labeled beads of 4 colors.

0

4, 12, 120, 1440, 24480, 482400, 11793600, 329011200, 10567065600, 380131315200, 15220275840000, 669519696384000, 32145251314176000, 1671451069736448000, 93606882905023488000, 5616332944630087680000

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..16.

C. G. Bower, Transforms (2)

Index entries for sequences related to Lyndon words

FORMULA

"CHJ" (necklace, identity, labeled) transform of 4, 0, 0, 0...

Equals n! * A027377(n).

CROSSREFS

Sequence in context: A053491 A285451 A249788 * A331905 A367885 A053551

Adjacent sequences: A032320 A032321 A032322 * A032324 A032325 A032326

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved