%I A003190 M3121
%S A003190 1,0,1,3,29,2101,7011349,1788775603133,53304526022885278659
%N A003190 Number of connected 2-plexes.
%D A003190 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A003190 E. M. Palmer, On the number of n-plexes, Discrete Math., 6 (1973), 377-390.
%H A003190 P. J. Cameron, <a href="http://www.cs.uwaterloo.ca/journals/JIS/index.html">
               Sequences realized by oligomorphic permutation groups</a>, J. Integ. 
               Seqs. Vol. 3 (2000), #00.1.5.
%Y A003190 Sequence in context: A088389 A094000 A162085 this_sequence A133663 A006526 
               A139517
%Y A003190 Adjacent sequences: A003187 A003188 A003189 this_sequence A003191 A003192 
               A003193
%K A003190 nonn,nice
%O A003190 1,4
%A A003190 N. J. A. Sloane (njas(AT)research.att.com).