  The space of holomorphic foliations of codimension one and degree $d\geq 2$
in $\mathbb{P}^n$ ($n\geq 3$) has an irreducible component whose general
element can be written as a pullback $F^*\mathcal{F}$, where $\mathcal{F}$ is a
general foliation of degree $d$ in $\mathbb{P}^2$ and
$F:\mathbb{P}^n\dashrightarrow \mathbb{P}^2$ is a general rational linear map.
We give a polynomial formula for the degrees of such components.
