In the sequence of positive integers, starting with 2018,121,16, \ldots each term is the square of the sum of digits of the previous term. What is the 2018^{\text {th }} term of the sequence?
In the sequence of positive integers, starting with 2018,121,16, \ldots each term is the square of the sum of digits of the previous term. What is the 2018^{\text {th }} term of the sequence?