input: from typing import List
  
  def sierpinski_triangle(n: int) -> List[str]:
      """ Generate the first n elements of the Sierpinski triangle.
      Each element is represented as a string of '1's and '0's corresponding 
      to the binary representation of the row in the Sierpinski triangle.
  
      >>> sierpinski_triangle(1)
      ['1']
      >>> sierpinski_triangle(2)
      ['1', '11']
      >>> sierpinski_triangle(3)
      ['1', '11', '111']
      >>> sierpinski_triangle(4)
      ['1', '11', '111', '1011']
      """
      result = []
      for i in range(1, n + 1):
          if i == 1:
              result.append('1')
          else:
              row = '1'
              for j in range(1, i):
                  row += '0' if j % 2 != 0 else '1'
              result.append(row)
      return result
output:     result = []
      for i in range(1, n + 1):
          if i == 1:
              result.append('1')
          else:
              prev_row = result[-1]
              new_row = ''
              for j in range(len(prev_row)):
                  if j == 0:
                      new_row += '1'
                  else:
                      new_row += '0' if prev_row[j] == prev_row[j-1] else '1'
              result.append(new_row)
      return result