Expansion of e.g.f. sin(x)/cos(2*x).A000464Expansion of e.g.f. sin(x)/cos(2*x).Terms a(0) =1a(1) =11a(2) =361a(3) =24611a(4) =2873041a(5) =512343611a(6) =129570724921External referencesoeis: A000464