\left(  \left(  \color{#92639a}{n}  \times  \left(  \left(  \left(  \left(  \color{#92639a}{n}  -  \color{#8801c6}{1} \right)   \times  \color{#6b9e4e}{factorial}\left( \left(  \color{#92639a}{n}  -  \color{#8801c6}{1} \right)   -  \color{#8801c6}{1}\right)  \right)  \right)  \right)  \right)  \right)