A112612 - OEIS

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A112612

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

%I #7 Jan 14 2020 09:56:14

%S 3,26,624

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

%C See reference for more information.

%H I. P. Goulden, J. H. Kwak and J. Lee, <a href="https://doi.org/10.1016/j.disc.2003.10.030">Enumerating branched orientable surface coverings over a non-orientable surface</a>, Discr. Math. 303 (2005), 42-55.

%K nonn,bref

%O 1,1

%A _N. J. A. Sloane_, Dec 23 2005