  We construct positive solutions to the equation $$-\Delta_{\mathbf{H}^n} u =
u^{\frac{Q+2}{Q-2}}$$ on the Heisenberg group, singular in the origin, similar
to the Fowler solutions of the Yamabe equations on $\mathbf{R}^n$. These
satisfy the homogeneity property $u\circ\delta_T=T^{-\frac{Q-2}{2}}u$ for some
$T$ large enough, where $Q=2n+2$ and $\delta_T$ is the natural dilation in
$\mathbf{H}^n$. We use the Lyapunov-Schmidt method applied to a family of
approximate solutions built by periodization from the global regular solution
classified by Jerison and Lee.
