Terminal Equivalent of Finder Sort Order
GNU ls has the rather useful -v option that will do exactly what you want. Unfortunately there's no similar option for OS X's BSD-based ls. 

A quick solution is to do the following:

$ ls | sort -n -k1.5


That sorts the output starting at the 5th character of the first field.

The same question was asked at StackOverflow and there are a number of other possible solutions listed there (some are Linux-specific though).