The figures $F_1,F_2,F_3,\dots$ are a sequence of patterns made of dots. $F_1$ consists of a single dot. For $n\ge 2$, $F_n$ is constructed from $F_{n-1}$ by adding a new outermost square layer of dots such that the number of dots on each side of this new square is $2n$. How many dots are there in figure $F_{10}$?