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%I M2137 N0849 #25 Feb 04 2022 00:37:37
%S 2,24,272,3424,46720,676608,10251520,160900608
%N Almost trivalent maps.
%D R. C. Mullin, E. Nemeth and P. J. Schellenberg, The enumeration of almost cubic maps, pp. 281-295 in Proceedings of the Louisiana Conference on Combinatorics, Graph Theory and Computer Science. Vol. 1, edited R. C. Mullin et al., 1970.
%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H H. Bottomley, <a href="/A001006/a001006.2.gif">Illustration of initial terms</a>
%H Colin Defant and Kai Zheng, <a href="https://arxiv.org/abs/2008.12297">Stack-Sorting with Consecutive-Pattern-Avoiding Stacks</a>, arXiv:2008.12297 [math.CO], 2020.
%H Jian Zhou, <a href="https://arxiv.org/abs/1810.03883">Fat and Thin Emergent Geometries of Hermitian One-Matrix Models</a>, arXiv:1810.03883 [math-ph], 2018.
%Y Cf. A002007, A002008, A002009, A002010.
%K nonn,more
%O 0,1
%A _N. J. A. Sloane_
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