One way to compute a square value is using a recursively defined sequence as following. $[6$ points$]$

a$\_$n$=\{(1$& if n$=1$ @a$\_($n$-1)+(2$n$-1)$&otherwise$)$

Write a recursive function recSquare$($n$).[$In a recursive function, the function can call itself inside the function. Just write the code that implements the comment.$]$

def recSquare$($n$)$:

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ # if n is $1($base case$)$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ # return $1$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ # otherwise $($general case$)$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ # return $(2$n$-1)+$ square of $($n$-1)$