%I A093733
%S A093733 1,665,106819,10365005,805351531,56294206205,3735873535339,
%T A093733 241600284318365,15423235216318411,978180744322139645,
%U A093733 61834480769377286059,3902270609960140639325,246057483524862034206091
%N A093733 Number of connected relations.
%D A093733 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 A093733 G. Kilibarda and V. Jovovic, "Enumeration of some classes of T_0-hypergraphs", 
               in preparation, 2004.
%F A093733 63^n-6*32^n-15*18^n+30*17^n-10*14^n+120*11^n-120*10^n+30*9^n-270*8^n+360*7^n-120*6^n.
%Y A093733 Cf. A005333, A001047, A002501, A002502, A093732.
%Y A093733 Sequence in context: A145750 A105978 A069426 this_sequence A133562 A062045 
               A043515
%Y A093733 Adjacent sequences: A093730 A093731 A093732 this_sequence A093734 A093735 
               A093736
%K A093733 nonn
%O A093733 1,2
%A A093733 Goran Kilibarda, Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 14 2004