This problem was asked by Epic.
The "look and say" sequence is defined as follows: beginning with the term 1, each subsequent term visually describes the digits appearing in the previous term.
The first few terms are as follows:
1 11 21 1211 111221
As an example, the fourth term is 1211, since the third term consists of one 2 and one 1.
Given an integer N, return the Nth term of this sequence.
Input:
N: 5
Output: "111221"