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A032183 "CIJ" (necklace, indistinct, labeled) transform of 3,3,3,3... 1
3, 12, 84, 876, 12180, 211692, 4415124, 107430636, 2987482260, 93461994732, 3248794543764, 124223034396396, 5181679901192340, 234153759187726572, 11395053576644512404, 594148263021558162156 (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 necklaces

FORMULA

E.g.f.: -log(4-3*exp(x)). Sum_{k=1..n) 3^k*(k-1)!*Stirling2(n, k). - Vladeta Jovovic, Sep 14 2003

a(n) ~ (n-1)! / (log(4/3))^n. - Vaclav Kotesovec, Mar 29 2014

MATHEMATICA

Table[ PolyLog[n, 3/4], {n, 0, -15, -1}] (* Robert G. Wilson v, Aug 05 2010 *)

PROG

(PARI) a(n)=polylog(1-n, 3/4) \\ Charles R Greathouse IV, Aug 27 2014

CROSSREFS

Cf. A000629, A027882.

Sequence in context: A066780 A231868 A147835 * A225905 A070825 A232934

Adjacent sequences:  A032180 A032181 A032182 * A032184 A032185 A032186

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified February 19 18:31 EST 2018. Contains 299356 sequences. (Running on oeis4.)