Function fac(n As Integer) As Long

    fac = 1

    For i = 1 To n

fac = fac * i

    Next i

End Function

Private Sub Command1Click()

Dim s  As Long, j As Integer

For j = 1 To 10

Next

Text1.Text = Str(s)

End Sub

 方框中的正确语句是：（   ）

Private Sub Command1_Click()

  Dim a(0 To 5) As Integer

  Dim i As Integer               ’①

  a(0) = 1                      '②

  For i = 1 To 5

    a(i) = 2 * a(i - 1) + 1          '③

  Next i

  Text1.Text = Str(a(6))         '④

End Sub

执行该算法，依次输入a的值为3，5，2后，算法的输出结果为(     )