%I A006815 M4157
%S A006815 1,6,23,84,283,930,2921,9096,27507,82930,244819,722116,2096603,6087290,
%T A006815 17458887,50090544,142317089,404543142
%N A006815 Related to self-avoiding walks on square lattice.
%D A006815 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A006815 S. S. Manna, A. J. Guttmann and A. K. Roy, Diffusion on self-avoiding 
               walk networks, J. Phys. A 22 (1989), 3621-3627.
%Y A006815 Sequence in context: A114245 A078798 A027043 this_sequence A054491 A013261 
               A013265
%Y A006815 Adjacent sequences: A006812 A006813 A006814 this_sequence A006816 A006817 
               A006818
%K A006815 nonn,walk
%O A006815 1,2
%A A006815 N. J. A. Sloane (njas(AT)research.att.com).