Sub aaa()
    Rows.Clear
    Dim n As Integer, k As Integer, i As Integer
    n = CInt(InputBox("n="))
    k = 2 * n - 1
    ReDim y(1 To k) As Integer
    Randomize Timer
    For i = 1 To k
        y(i) = Int(Rnd * 100 - 50)
    Next i
    Dim ry As Range
    Set ry = Range(Cells(2, 2), Cells(2, k + 1))
    ry = y
    ReDim x(1 To n) As Integer
    Dim rx As Range
    Set rx = Range(Cells(3, 2), Cells(3, n + 1))
    For i = 1 To n
        x(i) = y(2 * i - 1) ^ 2
    Next i
    rx = x
    Cells(2, 1) = "y"
    Cells(3, 1) = "x"
    Set ry = Range(Cells(2, 1), Cells(2, k + 1))
    Set rx = Range(Cells(3, 1), Cells(3, n + 1))
End Sub