Generate a Fibonacci sequence up to n terms. In a Fibonacci sequence, each number is the sum of the two preceding ones, starting from 0 and 1.

Examples:

Input: n = 5 Output: [0, 1, 1, 2, 3] Explanation: The first 5 Fibonacci numbers are 0, 1, 1, 2, and 3 Input: n = 8 Output: [0, 1, 1, 2, 3, 5, 8, 13] Explanation: The first 8 Fibonacci numbers are 0, 1, 1, 2, 3, 5, 8, and 13
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