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%I #15 Apr 07 2022 06:16:10
%S 2,8,34,182,1300,12634,153598,2231004,37250236,699699968,14574247086,
%T 333121322514,8286605836248,222824153996898,6439779836400464,
%U 199051769194393718,6552226226766384216,228826838199807593530
%N Arises in counting maps on a surface: see Coquereaux-Zuber (2015) for precise definition.
%H R. de Mello Koch, S. Ramgoolam, <a href="https://doi.org/10.1103/PhysRevD.85.026007">Strings from Feynman graph counting: Without large N</a>, Phys. Rev. D 85 (2012) 026007. Different from a(7) onwards.
%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, <a href="https://dx.doi.org/10.1142/S0218216516500474">1650047</a> (2016),
%Y Euler transform of A170946.
%K nonn
%O 1,1
%A _N. J. A. Sloane_, Mar 02 2016
%E a(11) and beyond from Euler transform of A170946 - _R. J. Mathar_, Apr 07 2022
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