%I
%S 1,4,10,12,18,26,30,34,38,42,48,50,58,68,76,72,78
%N Number of Landsberg zones in the nth Brillouin zone of a rectangular lattice.
%C This sequence enumerates the number of polygons that make up the nth Brillouin zone of a twodimensional rectangular lattice. Brillouin zones play an important role in the description of wave propagation in crystals. Their tiling of the lattice's fundamental domain is also known in physics as the "reduced zone scheme", so, alternatively, this sequence enumerates the number of "pieces" in the reduced zone scheme.
%D M.G. JuradoTaracena, "On Brillouin zones and related constructions", Rev. Mex. Fis. E, 57 (2011), 3237.
%Y Cf. A180603
%K nonn,more
%O 1,2
%A _MG JuradoTaracena_, Nov 10 2011
