Question

Find the 4th term in the sequence with the following definition:

Answer 1

`\bf \begin{array}{llll} ordinal&term&\stackrel{(a_(n-1))^2}{value}\\ \cline{1-3} 1&a_1&2\\\\ 2&a_2&(a_(2-1))^2\\ &&(a_1)^2\\ &&2^2\\ &&4\\\\ 3&a_3&(a_(3-1))^2\\ &&(a_(2))^2\\ &&4^2\\ &&16\\\\ 4&a_4&(a_(4-1))^2\\ &&(a_(3))^2\\ &&256 \end{array}`