%I A103938
%S A103938 3,2,5,18,77,364,1836,9690,52877,296010,1690845,9817080,57769740,
%T A103938 343806368,2065802056,12515350122,76367432013,468922828150,
%U A103938 2895381678735,17966214519330
%N A103938 Number of rooted non-separable n-edge maps in the plane (planar with 
               a distinguished outside face).
%D A103938 V. A. Liskovets and T. R. Walsh, Enumeration of unrooted maps on the 
               plane, Rapport technique, UQAM, No. 2005-01, Montreal, Canada, 2005.
%H A103938 V. A. Liskovets and T. R. Walsh, <a href="http://dx.doi:10.1016/j.aam.2005.03.006">
               Counting unrooted maps on the plane</a>, Advances in Applied Math., 
               36, No.4 (2006), 364-387.
%F A103938 a(n)=(n+2)*A000139(n)/2.
%Y A103938 Sequence in context: A111273 A068553 A077039 this_sequence A085973 A005265 
               A005266
%Y A103938 Adjacent sequences: A103935 A103936 A103937 this_sequence A103939 A103940 
               A103941
%K A103938 easy,nonn
%O A103938 1,1
%A A103938 Valery A. Liskovets (liskov(AT)im.bas-net.by), Mar 17 2005