%I A000131 M1535 N0599
%S A000131 2,5,21,61,214,669,2240,7330,24695,83257,284928,981079,3410990,
%T A000131 11937328,42075242,149171958,531866972,1905842605,6861162880
%N A000131 Number of asymmetrical dissections of n-gon.
%D A000131 S. J. Cyvin, J. Brunvoll, E. Brendsdal, B. N. Cyvin and E. K. Lloyd, 
               Enumeration of polyene hydrocarbons: a complete mathematical solution, 
               J. Chem. Inf. Comput. Sci., 35 (1995) 743-751.
%D A000131 R. K. Guy, ``Dissecting a polygon into triangles,'' Bull. Malayan Math. 
               Soc., Vol. 5, pp. 57-60, 1958.
%D A000131 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A000131 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%Y A000131 Cf. A000063.
%Y A000131 Sequence in context: A088498 A039777 A000941 this_sequence A152801 A062297 
               A047104
%Y A000131 Adjacent sequences: A000128 A000129 A000130 this_sequence A000132 A000133 
               A000134
%K A000131 nonn
%O A000131 7,1
%A A000131 N. J. A. Sloane (njas(AT)research.att.com).