n + 3 30 --------------- n + 2 n + 3 4*5 *6
-2 - n -3 - n 3 + n 5 *6 *30 ----------------------- 4
0.25*6.0^(-3.0 - n)*5.0^(-2.0 - n)*30.0^(3.0 + n)
5/4
-2 - n -3 - n n + 3 5 *6 *30 ----------------------- 4