Acquisition Schedule Formula

I have a row in my life cycle cost estimate (20 year projection) that needs to follow the following command:

It should be zeroed out every year, except on acquisition years, and every 5th years. Essentially, I would like it so when I change the acquisition years, it will follow the above command.

for example: (3 year acquisition cycle)

FY1  FY2  FY3  FY4  FY5  FY6  FY7  FY8  FY9  FY10  FY11
100    0    0  100    0  100  100    0    0   100   100

*If i changed the acquisition cycle to 4 years, it would follow:

FY1  FY2  FY3  FY4  FY5  FY6  FY7  FY8  FY9  FY10  FY11
100    0    0    0  100  100    0    0  100     0   100

I would give a dummy book, but I don't even know where to go with this formula...

Any help would be much appreciated!