Looking for a mathematical formula

[Dark_Stang]

You can do this a few ways...
Iteration, like roxoff showed.
Recursion, which is needlessly complicated in this case.

Or with this formula.
let x = end answer
let p = starting population
let i = increase in size each year
let y = how many years
x = p*(i^y)
As in, x equals p multiplied by i to the y power.

[tech291083]

Thanks guys for the help...appreciated..