General Term of a Sequence What would be the best way in finding a general term $a_n, n>3$ for the recursive sequence?  

$$a_n = \dfrac{6a_{n-1}^2a_{n-3} -8 a_{n-1}a_{n-2}^2}{a_{n-2}a_{n-3}}$$

where $a_1 = 1 ; a_2 = 2 ; a_3 = 24$ ;
 A: Given the recursive sequence:

$$a_n = \dfrac{6a_{n-1}^2a_{n-3} -8 a_{n-1}a_{n-2}^2}{a_{n-2}a_{n-3}}\tag{E}$$

$(\bf E)$ can be rearranged to:
$$\frac{a_n}{a_{n-1}}=6\frac{a_{n-1}}{a_{n-2}}-8\frac{a_{n-2}}{a_{n-3}}\tag{1}$$
Seeing a pattern in $(1)$ let a new term $t_n$ be: $$t_n=\frac{a_n}{a_{n-1}}\tag{2}$$
Now $t_n$ follows the recursive sequence:
$$t_n=6t_{n-1}-8t_{n-2}\tag{3}$$
The characteristic equation of $t_n$ is:
$$r^2=6r-8\iff r^2-6r+8=0\implies r=2,4\tag{4}$$
So $t_n$ is given by the relation:
$$t_n=a2^n+b4^n\tag{5}$$
Also we know that $t_2=2,t_3=12$. 
So after substituting:
$$\begin{align}4a+16b=2\quad\mid&\quad8a+64b=12\tag{6}\\ a=-0.5\quad\mid&\quad b=0.25\tag{7}\end{align}$$
Putting back values of $a$ and $b$:
$$t_n=4^{n-1}-2^{n-1}\tag{8}$$
Now from $(2)$ and $(8)$:
$$a_n=(4^{n-1}-2^{n-1})a_{n-1}\tag{9}$$
Following this pattern:
$$\begin{align}a_n&=(4^{n-1}-2^{n-1})(4^{n-2}-2^{n-2})...(4^{2-1}-2^{2-1})\underbrace{a_1}_{a_1=1}\tag{10}\\a_n&=\left(\prod_{k=1}^{n-1}(4^{k}-2^{k})\right)\tag{11;$n\ge2$}\\\end{align}$$
