%I A002060 M3691 N1509
%S A002060 4,60,550,4004,25480,148512,813960,4263600,18573816
%N A002060 Number of partitions of a polygon by number of parts.
%D A002060 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A002060 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A002060 A. Cayley, On the partitions of a polygon, Proc. London Math. Soc., 22 
               (1891), 237-262 = Collected Mathematical Papers. Vols. 1-13, Cambridge 
               Univ. Press, London, 1889-1897, Vol. 13, pp. 93ff.
%Y A002060 Sequence in context: A074835 A060492 A112041 this_sequence A007220 A034866 
               A055315
%Y A002060 Adjacent sequences: A002057 A002058 A002059 this_sequence A002061 A002062 
               A002063
%K A002060 nonn
%O A002060 6,1
%A A002060 N. J. A. Sloane (njas(AT)research.att.com).