I should have supplied an example of what I was looking for. For example, for N=2: 
( arr[0][0] + arr[0][1] ) ( arr[1][0] + arr[1][1] )

[download]
what I want to find is 
C[0] = arr[0][0] arr[1][0]
C[1] = arr[0][0] arr[1][1]
C[2] = arr[0][1] arr[1][0]
C[3] = arr[0][1] arr[1][1]

[download]
It doesn't matter if the coefficients come out in this order, of course.

In reply to Re^2: Obtaining terms in an expansion by randyk
in thread Obtaining terms in an expansion by randyk

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