$$\left. \begin{array}{c|c}1024 & 2\cr512 & 2 \cr256 & 2 \cr128 & 2 \cr64 & 2 \cr32 & 2 \cr16 & 2 \cr8 & 2 \cr4 & 2 \cr2 & 2 \cr1\end{array} \right.$$