Bonjour dgermain, njhub,
un essai macro, si j'ai bien compris :
Sub Dgermain()
Dim x As Long, i As Long, j As Long
x = 4
With Worksheets("Sheet1")
For i = 5 To .Range("A" & Rows.Count).End(xlUp).Row
For j = 5 To .Range("A" & Rows.Count).End(xlUp).Row
x = x + 1
.Cells(x, 5) = .Cells(i, 1) * 100 + .Cells(j, 1)
Next
Next
End With
End Sub
A+