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the problem is:

( 1 * 3 * 5 * .... * (2n - 1) ) / ( 1 * 2 * 3 * ... * n) =< 2^n

=< = equal or lesser than

P(1) is easy to solve, and so is P(k), but I start having problems with P(k+1) to prove the formula.. can someone give me a hand? =)

thanks!

/Maximilian