Two Factor permutation Table- question about past post for shg

How are you shg,

I was wondering if you could help me out with one of your past posts about permutation. You posted on 9/5/12. You helped with a formula using the MOD function.

=IF(MOD(INT(2*(ROWS($B$1:C2) - 1) / 2 ^ COLUMNS($B$1:C2)), 2), "s","f")

That is what you posted.

the function was to create a permutation table that was 3 by 3 I believe. My question is will this function work to create any size 2 factor permutation table. I needed to create a permutation table that is for 2^7 factors.

Thanks in advance for your response