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%I M3367 #12 Mar 29 2017 05:25:02
%S 1,4,9,32,132,597,3064,17114,102274,643907,4219540
%N Number of unsensed planar maps with n edges and without faces of degree 1 or 2.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%D Walsh, T. R. S.; Generating nonisomorphic maps without storing them. SIAM J. Algebraic Discrete Methods 4 (1983), no. 2, 161-178.
%K nonn,more
%O 2,2
%A _N. J. A. Sloane_.
%E a(8)-a(12) from _Sean A. Irvine_, Mar 29 2017