input: from typing import List
  
  def FibonacciSequence(n: int) -> List[int]:
      """ Generate a Fibonacci sequence of the first n numbers.
      >>> FibonacciSequence(5)
      [0, 1, 1, 2, 3]
      >>> FibonacciSequence(10)
      [0, 1, 1, 2, 3, 5, 8, 13, 21, 34]
      """
      if n == 1:
          return [0]
      elif n == 2:
          return [0, 1]
      else:
          sequence = [0, 1]
          for i in range(2, n):
              sequence.append(sequence[-1] + sequence[-2])
          return sequence
output:     if n == 1:
          return [0]
      elif n == 2:
          return [0, 1]
      else:
          sequence = [0, 1]
          for i in range(2, n):
              sequence.append(sequence[-1] + sequence[-2])
          return sequence