Enter this formula in C1:
=INDEX(A:A,ROWS($1:2)/2)+3

And enter this formula in C3:
=INDEX(A:A,ROWS($1:4)/2)+3

NOW ... Select C1 to *C4*,
Click on the fill handle of the *selected 4 cells*,
And drag down to copy as needed.
--
HTH,

RD

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" wrote in message
...
Greetings all

I'm trying to get excel to calculate a formula for every other row is this
possible.

Example:
Column A1-A9 has 1 thru 9 in it.
Column C1 has the formula A1+3 and I would like that formula to be in
every
other row of C. So C1 would be A1+3 ,C2 would be blank, C3 would be A2+3,
C4 would be blank, C5 would be A3+3 and so on.

Is this possible?
tia sal2