  We study the recurrence coefficients of the monic polynomials $P_n(z)$
orthogonal with respect to the deformed (also called semi-classical) Freud
weight \begin{equation*} w_{\alpha}(x;s,N)=|x|^{\alpha}{\rm
e}^{-N\left[x^{2}+s\left(x^{4}-x^{2}\right)\right]}, ~~x\in\mathbb{R},
\end{equation*} with parameters $\alpha>-1,~N>0,~s\in[0,1]$. We show that the
recurrence coefficients $\beta_{n}(s)$ satisfy the first discrete Painlev\'{e}
equation (denoted by d${\rm P_{I}}$), a differential-difference equation and a
second order nolinear ordinary differential equation (ODE) in $s$. Here $n$ is
the order of the Hankel matrix generated by $w_{\alpha}(x;s,N)$. We describe
the asymptotic behavior of the recurrence coefficients in three situations, (i)
$s\rightarrow0$, $n,N$ finite, (ii) $n\rightarrow\infty$, $N$ finite, (iii) $n,
N\rightarrow\infty$, such that the radio $r:=\frac{n}{N}$ is bounded away from
$0$ and closed to $1$. We also investigate the existence and uniqueness for the
positive solutions of the d${\rm P_{I}}$.
  Further more, we derive, using the ladder approach, a second order linear ODE
satisfied by the polynomials $P_n(z)$. It is found as $n\rightarrow\infty$, the
linear ODE turns to be a biconfluent Heun equation. This paper concludes with
the study of the Hankel determinant, $D_{n}(s)$, associated with
$w_{\alpha}(x;s,N)$ when $n$ tends to infinity.
