A006837 - OEIS

%I M2207 #7 Mar 30 2012 16:45:04

%S 0,1,0,3,1,0,21,-34,101,-249,921,-2524,5613,-8914,6206

%N Percolation series for directed cubic lattice.

%D K. De'Bell and J. W. Essam, Estimates of the site percolation probability exponents for some directed lattices, J. Phys. A 16 (1983), 3145-3147.

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%K sign

%O 2,4

%A _N. J. A. Sloane_.