Google Spreadsheets: duplicate date for 7 cells and then increment date by 7 days and repeat

Question

My spreadsheet is to look like this:

10/1/2013 data
10/1/2013 data
10/1/2013 data
10/1/2013 data
10/1/2013 data
10/1/2013 data
10/1/2013 data
[space left for clarity]
10/8/2013 data
10/8/2013 data
10/8/2013 data
10/8/2013 data
10/8/2013 data
10/8/2013 data
10/8/2013 data

I know how to auto-fill the dates so that each subsequent cell is 7 days after the previous, ie:

10/1/2013
10/8/2013
10/15/2013
etc.

But I need exactly 7 cells to carry an identical date before moving on. Any idea how to do this? I'm looking at the cell.setFormula method at the moment for clues.

Cheers, Mig

Answer 1

To start with a simple solution... why not put the following formula cell A8??

It would take a little modification of the formula for you to copy this formula into cells A2 through A7 instead of hardcoding that first set of 7 rows. But this should get you started.

=if(A7=A1,A7+7,A7)