Ooo here is what i posted earlier.

But the LaTex Post didnt help me :/.

$\displaystyle floor(\sum_{x = 1}^{L - 1} floor(x+300*2^x/7)/4)$

Im not looking for free answers...Just help on this formula

I understand Sigma but not the part on top of it, the 'L-1', Usually it is just one number?

Maybe someone here can walk me through it ?

Please & thank you in advanced.