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A160964 ((2^b-1)/phi(n))*Sum_{d|n} Moebius(n/d)*d^(b-1) for b = 11. 0
2047, 2094081, 60435628, 1072169472, 4997558082, 61825647444, 96371138776, 548950769664, 1189554465924, 5112501917886, 5309390815620, 31654731491328, 23516361067738, 98587674967848, 147547904812968, 281062794067968 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

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..16.

CROSSREFS

Sequence in context: A321556 A321550 A014233 * A022193 A069386 A069412

Adjacent sequences:  A160961 A160962 A160963 * A160965 A160966 A160967

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 19 2009

STATUS

approved

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Last modified January 26 16:58 EST 2020. Contains 331280 sequences. (Running on oeis4.)