I have a work sheet that has sheet numbers from 1 to 2800. I now need to
identify those sheet numbers that have been deleted. See the example below.

Is there a formula for this?

Sheet Project Name
Number
1 Abundant Life Christian Center
2 Abundant Life Christian Center
3 Abundant Life Christian Center
6 Admiral Byrd Drive
7 Admiral Byrd Drive
8 Admiral Byrd Drive
10 Aerocenter Lot 4
11 Aerocenter Lot 4
12 Aerocenter Lot 4
14 Airport Warehousing at Arbor Court
15 Airport Warehousing at Arbor Court


TIA