# How do you find the nth term rule for 1,4,16,64?

Mar 5, 2016

$1 , 4 , 16 , 64 - - - - -$
Following the formula of $n t h$ term of GP i.e. $a {r}^{n - 1}$
the nth term of GP=${1.4}^{n - 1} = {4}^{n - 1}$