%I A093732
%S A093732 1,211,14221,636331,23679901,805351531,26175881341,831358677451,
%T A093732 26094426008221,814105545191851,25320182311228861,786251347986776971,
%U A093732 24394981288950302941,756583120577782494571,23459491617092461686781
%N A093732 Number of connected relations.
%D A093732 G. Kreweras, Inversion des polynomes de Bell bidimensionnels et application 
               au denombrement des relations binaires connexes. C. R. Acad. Sci. 
               Paris Ser. A-B 268 1969 A577-A579.
%D A093732 G. Kilibarda and V. Jovovic, "Enumeration of some classes of T_0-hypergraphs", 
               in preparation, 2004.
%F A093732 31^n-5*16^n-10*10^n+20*9^n+30*7^n-60*6^n+24*5^n.
%Y A093732 Cf. A005333, A001047, A002501, A002502, A093733.
%Y A093732 Sequence in context: A111480 A071367 A069425 this_sequence A116075 A096834 
               A099687
%Y A093732 Adjacent sequences: A093729 A093730 A093731 this_sequence A093733 A093734 
               A093735
%K A093732 nonn
%O A093732 1,2
%A A093732 Goran Kilibarda, Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 14 2004