Question

Which represents the first three terms of the sequence: a1 = 2 and an = 4(an-1)2? 2, 16, 1024

Answer 1

$\bf \begin{array}{ll} term&value\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ a_1&2\\\\ a_2&4(a_{n-1})^2\\ &4(a_{2-1})^2\\ &4(a_1)^2\\ &4(2)^2\\ &16\\\\ a_3&4(a_{3-1})^2\\ &4(a_2)^2\\ &4(16)^2 \end{array}$