Search: id:A051337
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%I A051337
%S A051337 1,0,1,1,6,35,353,6008,178133,9355949,884464590,152310149735,
%T A051337 48234782263293,28304491788158056,30964247546702883729,
%U A051337 63468402142317299907481,244785748571033855024746438
%N A051337 Number of strongly connected tournaments on n nodes.
%C A051337 A tournament is strongly connected (or strong) if there is a directed 
               path between any pair of points.
%D A051337 F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 
               1973, p. 127, Eq. (5.2.4);
%D A051337 J. W. Moon, Topics on Tournaments, Holt, NY, 1968.
%D A051337 J. L. Gross and J. Yellen, eds., Handbook of Graph Theory, CRC Press, 
               2004; p. 523.
%F A051337 G.f.: = B(x)/(1+B(x)) where B(x) = g.f. for A000568.
%Y A051337 Cf. A000568, A054946.
%Y A051337 Sequence in context: A167579 A030446 A093989 this_sequence A152128 A115457 
               A128298
%Y A051337 Adjacent sequences: A051334 A051335 A051336 this_sequence A051338 A051339 
               A051340
%K A051337 nonn,nice,easy
%O A051337 1,5
%A A051337 Vladeta Jovovic (vladeta(AT)eunet.rs)

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