Dim i As Integer, j As Integer, n As Integer, s As String
n = 10
For i = 1 To n Step 1
s = Format(i, "00")
For j = 1 To i Step 1
s = s & "*"
Next j
Debug.Print s
Next i
End Sub

そういえば、iとかjとか一文字の変数名はよくないって話はどうなってんの