highlight the column or row you want to change then go to edit, fill, series, then specify by how much you want to change each number.. by 1 or by 2's or 3's etc... this is how I do this operation.. Im sure there are other ways...
Or as a shortcut, you can put in the first few numbers of the series:
Then select them and grab the little black blip at the lower right of the selection (shown in the picture) and drag it down until it fills the right number of cells. Cheers.