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%I M1236 #16 Mar 29 2017 03:13:01
%S 1,2,4,10,34,114,475,2104,10177,52012,279874
%N Number of unsensed planar maps with n edges and without faces or vertices of degree 1.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H Timothy R. Walsh, <a href="http://dx.doi.org/10.1137/0604018">Generating nonisomorphic maps without storing them</a>, SIAM J. Algebraic Discrete Methods 4 (1983), no. 2, 161-178.
%K nonn
%O 2,2
%A _N. J. A. Sloane_
%E a(9)-a(12) from _Sean A. Irvine_, Mar 28 2017
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