Hi,
Enter 1 in the top cell (say A2) and 2 in the cell below (A3). Now select
both A2 and A3, move the cursor to the bottom right-hand side corner of the
selected area; the cursor would change into a "+" like shape. Hold the left
mouse button and drag the cursor down to as many cells as you want.
Regards,
B. R. Ramachandran