%I A022017
%S A022017 1,3,8,29,103
%N A022017 Number of connected partially ordered sets by number of "lines": pairs 
               (a,b) where a < b and there is no c with a < c < b. The lines form 
               the minimal basis for the partial ordering.
%Y A022017 Cf. A000608, A022016.
%Y A022017 Sequence in context: A148872 A148873 A148874 this_sequence A148875 A148876 
               A013309
%Y A022017 Adjacent sequences: A022014 A022015 A022016 this_sequence A022018 A022019 
               A022020
%K A022017 nonn
%O A022017 1,2
%A A022017 Frank Adams-Watters (FrankTAW(AT)Netscape.net), Mar 30 2002