[Orgmode] filling cells automatically

[ignotus]

Dear Org users!

I would like to have the following functionality: I have a table like
this:

   | number1 | number2 | description |
   |---------+---------+-------------|
   |       1 |       1 | a           |
   |       1 |       2 | b           |
   |       1 |       3 | c           |
   |       1 |       4 | d           |
   |---------+---------+-------------|
   |       2 |       1 | aa          |
   |       2 |       2 | bb          |
   |       2 |       3 | cc          |
   |       2 |       4 | dd          |
   |---------+---------+-------------|
   |       3 |       1 | aaa         |
   |       3 |       2 | bbb         |
   |       3 |       3 | ccc         |
   |       3 |       4 | ddd         |
   |---------+---------+-------------|

I would like to generate number1 and number2 rows automatically (so when
I insert something the numbering will be okay), is this possible?  Well
I know it is, but is it possible within the current org table framework?

Thanks in advance, Richard.