如图:

自定义函数,代码如下:
Private Function MyNum(ByVal rng As Range, ByVal n As Integer)
Dim dic As Object, temp, arr(), i&
Set dic = CreateObject("Scripting.Dictionary")
temp = rng.Value
For i = UBound(temp) To 1 Step -1
dic(temp(i, 1)) = ""
Next
dic_keys = dic.Keys
For i = 1 To n
ReDim Preserve arr(1 To i)
arr(i) = dic_keys(n - i)
Next
MyNum = Application.Transpose(arr)
End Function