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A268568 Arises in counting maps on a surface: see Coquereaux-Zuber (2015) for precise definition. 0

%I

%S 0,0,1,1,2,9,29,133,594,2864

%N Arises in counting maps on a surface: see Coquereaux-Zuber (2015) for precise definition.

%H R. Coquereaux, J.-B. Zuber, <a href="http://arxiv.org/abs/1507.03163">Maps, immersions and permutations</a>, arXiv preprint arXiv:1507.03163, 2015. Also J. Knot Theory Ramifications 25, 1650047 (2016), DOI: http://dx.doi.org/10.1142/S0218216516500474

%K nonn,more

%O 1,5

%A _N. J. A. Sloane_, Mar 03 2016

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Last modified June 25 16:08 EDT 2022. Contains 354851 sequences. (Running on oeis4.)