%I A006981 M1133
%S A006981 1,1,1,1,2,4,8,16,34,72,157,343
%N A006981 Modular lattices on n nodes.
%D A006981 P. D. Lincoln, personal communication.
%D A006981 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%Y A006981 Cf. A006982, A006966.
%Y A006981 Sequence in context: A088325 A006210 A096812 this_sequence A003427 A045648 
               A166354
%Y A006981 Adjacent sequences: A006978 A006979 A006980 this_sequence A006982 A006983 
               A006984
%K A006981 nonn
%O A006981 0,5
%A A006981 N. J. A. Sloane (njas(AT)research.att.com).