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A112613 Related to enumeration of branched orientable surface coverings over a non-orientable surface. 0
1, 5, 24 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

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: A120660 A110720 A200822 * A305057 A333633 A222355

Adjacent sequences:  A112610 A112611 A112612 * A112614 A112615 A112616

KEYWORD

nonn,bref

AUTHOR

N. J. A. Sloane, Dec 23 2005

STATUS

approved

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Last modified June 26 10:23 EDT 2022. Contains 354879 sequences. (Running on oeis4.)