A112614 Related to enumeration of branched orientable surface coverings over a non-orientable surface.

15, 14120, 371515454

Offset

1,1

Comments

See reference for more information.

Links

Table of n, a(n) for n=1..3.

I. P. Goulden, J. H. Kwak and J. Lee, Enumerating branched orientable surface coverings over a non-orientable surface, Discr. Math. 303 (2005), 42-55.

Crossrefs

Sequence in context: A271406 A208299 A282945 * A238634 A198521 A373885

Adjacent sequences: A112611 A112612 A112613 * A112615 A112616 A112617

Keyword

nonn,bref

Author

N. J. A. Sloane, Dec 23 2005

Status

approved