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A160957 Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 11. 1
1, 1023, 29524, 523776, 2441406, 30203052, 47079208, 268173312, 581120892, 2497558338, 2593742460, 15463962624, 11488207654, 48162029784, 72080070744, 137304735744, 125999618778, 594486672516, 340614792100, 1278749869056 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

J. H. Kwak and J. Lee, Enumeration of graph coverings, surface branched coverings and related group theory, in Combinatorial and Computational Mathematics (Pohang, 2000), ed. S. Hong et al., World Scientific, Singapore 2001, pp. 97-161. See p. 134.

LINKS

Table of n, a(n) for n=1..20.

FORMULA

a(n) = A069095(n)/A000010(n). - R. J. Mathar, Jul 12 2011

CROSSREFS

Sequence in context: A023060 A223079 A011560 * A038997 A068026 A075946

Adjacent sequences:  A160954 A160955 A160956 * A160958 A160959 A160960

KEYWORD

nonn,mult

AUTHOR

N. J. A. Sloane, Nov 19 2009

EXTENSIONS

Definition corrected by Enrique Pérez Herrero, Oct 30 2010

STATUS

approved

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Last modified September 1 19:46 EDT 2014. Contains 246317 sequences.