f^{(n)}(0) = \left\{ 
\begin{array}{l l}
0 & \quad \mbox{$n$ paran}\\
1 & \quad n=1\\
(-1)^{\frac{n-1}{2}} [ (n-2)!! ]^{2} & \quad \mbox{$n$ neparan i $n \neq 1$}\\
\end{array} \right.