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%I A006403 M0808 #13 Jan 10 2018 17:19:00
%S A006403 0,1,2,3,6,15,36,114,396,1565,6756,31563,154370,785113,4099948,
%T A006403 21870704,118624544,652485364,3631820462,20426666644,115949791342,
%U A006403 663640383400
%N A006403 Number of 2-connected planar maps with n edges.
%D A006403 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%D A006403 Walsh, T. R. S.; Generating nonisomorphic maps without storing them. SIAM J. Algebraic Discrete Methods 4 (1983), no. 2, 161-178.
%D A006403 T. R. S. Walsh, personal communication.
%H A006403 T. R. S. Walsh, <a href="/A007401/a007401.pdf">Number of sensed planar maps with n edges and m vertices</a>
%K A006403 nonn
%O A006403 1,3
%A A006403 _N. J. A. Sloane_.

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