Awesome, thanks!! Just found the section of the man page, looks like a pretty feature-filled expansion technique:

       A sequence expression takes the form {x..y[..incr]}, where x and y are either  integers  or
       single  characters, and incr, an optional increment, is an integer.  When integers are sup-
       plied, the expression expands to each number between x and y, inclusive.  Supplied integers
       may  be  prefixed  with  0  to  force each term to have the same width.  When either x or y
       begins with a zero, the shell attempts to force all generated terms  to  contain  the  same
       number  of digits, zero-padding where necessary.  When characters are supplied, the expres-
       sion expands to each character lexicographically between x  and  y,  inclusive,  using  the
       default  C locale.  Note that both x and y must be of the same type.  When the increment is
       supplied, it is used as the difference between each term.  The default increment is 1 or -1
       as appropriate.

...although I just tested it, and the increment and 0-padding only work in non-interactive mode ='(