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%I M3242 #14 Dec 27 2018 07:57:49
%S 0,1,0,0,0,4,5,6,11,31,72,157,312,700,1472,3446,7855
%N Number of certain self-avoiding walks with n steps on square lattice (see reference for precise definition).
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H W. A. Beyer and M. B. Wells, <a href="http://dx.doi.org/10.1016/0097-3165(72)90024-6">Lower bound for the connective constant of a self-avoiding walk on a square lattice</a>, J. Combin. Theory, A 13 (1972), 176-182, Table I.
%Y Cf. A002976.
%K walk,nonn,more
%O 4,6
%A _N. J. A. Sloane_