%I A002907 M0391 N0149
%S A002907 2,2,20,38,146,368,1070,2824,7680,19996
%N A002907 Susceptibility for square lattice.
%D A002907 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A002907 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A002907 M. F. Sykes and M. E. Fisher, Antiferromagnetic susceptibility of the 
               plane square and honeycomb Ising lattices, Physica, 28 (1962), 919-938.
%Y A002907 Sequence in context: A103129 A009340 A053593 this_sequence A134046 A081687 
               A082811
%Y A002907 Adjacent sequences: A002904 A002905 A002906 this_sequence A002908 A002909 
               A002910
%K A002907 nonn
%O A002907 0,1
%A A002907 N. J. A. Sloane (njas(AT)research.att.com).