Wow, thanks for all the answers!
I have done my research and from various books I have found the same answer as this. This is all fine, but I have a loooooooong way to reach the number 2008... So I am still confused.
Thanks for you prompt reply,
Yes it's written correctly. I've tried a formula that I found in a book, that says it is:
1*3*5*...*(n-1)/2*4*6*...*(n) * pi
But it just can't be as simple as that... I'm sure this is a tricky question.