LWE instances have the form $\vec{a}_i,b_i = <\vec{a}_i,\vec{s}>+e_i~mod~q$$\vec{a}_i,b_i = \langle\vec{a}_i,\vec{s}\rangle+e_i\bmod q$ for some integer $q$ and for $i=1,\dots,m$.
My questions are about the NIST proposed standards. In the standards
Do we allow $q=2^t$ (if not why not?)? and what is relation between $q$ and $n$ where $n$ is length of $\vec{a}_i$?
How large can $m$ be?