%I M3094 #11 Aug 02 2015 14:56:54
%S 3,22,201,2160,24680,285384,3278484,37154172
%N Maximally extended polygons of length 2n on cubic lattice.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H I. G. Enting and A. J. Guttmann, <a href="http://dx.doi.org/10.1088/0305-4470/22/14/013">Area-weighted moments of convex polygons on the square lattice</a>, J. Phys. A 22 (1989), 2639-2642.
%K nonn,more
%O 1,1
%A _N. J. A. Sloane_