Formula/Array to return results in a certain range

Hello all. I'm new here and have been trying to figure out the best way to write this formula.
It's been giving me a headache trying to figure this out.
The rundown:
I have a simple sheet which shows 3 columns: "Date", "Contract#", & # of Contracts"
(Please click link to see simple spreadsheet showing example)
http://img10.imageshack.us/img10/49/excelsshot.jpg

The contracts all contain 5 or 6 #'s which contain numbers from 1-30. Each # in the contract represents different stages in the billing process.

I need a formula/array that shows which #'s are not appearing within the range 1-30 for the entire group of B2:B9 (not individually, but for the entire range).

So, please see below list in BOLD RED in the range B2:B9... I've highlighted numbers below are not appearing:
1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-23-24-25-26-27-28-29-30

I need a formula which will shows the #s in BOLD RED since they are not appearing in the range 1-30 in the cells B2:B9

I hope I didn't make the questions confusing.

Thank you in advance, I really appreciate the help!