What is the geometric mean of the sequence `1,2, 4, 8,..., 2^n`

Explanation

GM=`(1*2*4*8....2^n)^(1/(n+1))`

GM=`(2^(0+1+2+3+...+n))^(1/(n+1))`

GM=`(2^(n(n+1)/2))^(1/(n+1))`

GM=`(2)^(n/2)`.