VBA code to populate a table

We have a complex analysis process which determines a result by altering two variables. The first variable is an integer between 4 and 15, inclusive. The second variable is an integer between 7 and 40, inclusive. We have written a VBA loop which steps through all the variable combinations and ultimately identifies the optimal settings to maximize the result. Here's how:

For n1 = 4 To 15
    For n2 = 7 To 40
        Range("G3").Value = n1
        Range("M3").Value = n2
        If Range("AD4").Value > nMax Then
            nMax = Range("AD4").Value
            n1Max = n1
            n2Max = n2
        End If
    Next n2
Next n1

Range("G3").Value = n1Max
Range("M3").Value = n2Max

On further study, we have concluded that we need to better understand the implications of the two variables' interaction, not just the point where they produce the biggest "bang." Therefore, we want to build a table of all the results. We need to be able to look at the whole matrix of results defined by a column for each first variable value and a row for each second variable value. This table will show us a "sweet spot" where the intersect of several contiguous rows and columns provide superior, but not always optimal results.

Unfortunately, this VBA coding is beyond our level of skill. Can anyone assist us?