List the positive integers whose prime factors are all among 2, 3, and 5, in increasing order without duplicates. The value 1 is included because it has no prime factors. Return the nth value in this list, using 1-based indexing.
Example 1:
Input: n = 7
Output: 8Explanation: The first seven values are 1, 2, 3, 4, 5, 6, and 8. The value 7 is excluded because its prime factor is 7.
Example 2:
Input: n = 12
Output: 16Explanation: The first twelve values are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, and 16, so the answer is 16.
Example 3:
Input: n = 1
Output: 1Explanation: The sequence starts with 1, which has no prime factors and is included by definition.
Constraints:
1 <= n <= 1690