code: def hailstone(n):
    
  
    sequence = [n]
    while n > 1:
      if n%2 != 0:
        n = 3*n + 1
      else: 
        n = int(n/2)
      sequence.append(n)
    return sequence
docs: Return the 'hailstone sequence' from n to 1
       n: The starting point of the hailstone sequence