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Number of unsensed 2-connected maps without faces of degree 2.
(Formerly M1365)
1

%I M1365 #13 Apr 02 2017 20:46:43

%S 1,1,2,5,9,24,70,222,785,3055

%N Number of unsensed 2-connected maps without faces of degree 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

%O 3,3

%A _N. J. A. Sloane_.

%E a(11) and a(12) from _Sean A. Irvine_, Apr 02 2017