A160881 Regular coverings having dihedral voltage groups (see Kwak-Lee reference for precise definition).

3, 14, 85, 591, 4403

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.

Links

Table of n, a(n) for n=1..5.

Crossrefs

Cf. A160870.

Sequence in context: A352887 A230218 A301934 * A263187 A213628 A088716

Adjacent sequences: A160878 A160879 A160880 * A160882 A160883 A160884

Keyword

nonn,more

Author

N. J. A. Sloane, Nov 15 2009

Status

approved