Expansion of (sin^2 x + sin x) /cos 2x.

Terms

a(0) =0a(1) =1a(2) =2a(3) =11a(4) =40a(5) =361a(6) =1952a(7) =24611a(8) =177280a(9) =2873041a(10) =25866752a(11) =512343611a(12) =5535262720a(13) =129570724921