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A112617 Related to enumeration of branched orientable surface coverings over a non-orientable surface. 0
1, 39, 1483, 354009, 208211284 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See reference for more information.

REFERENCES

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.

LINKS

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

CROSSREFS

Sequence in context: A170720 A170758 A218741 * A009983 A269028 A158768

Adjacent sequences:  A112614 A112615 A112616 * A112618 A112619 A112620

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 23 2005

STATUS

approved

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Last modified February 23 04:57 EST 2018. Contains 299473 sequences. (Running on oeis4.)