§3.3.1 A Dead End: Calculating a Closed Form for (A^T) A

Session (p. 57)

g[j_, 
        l_] := (∑_(k = 1)^∞) 
            4/(((k^2) + (2 j - 1) k + (j - 1) (j - 
                          2)) ((k^2) + (2 l - 1) k + (l - 
                          1) (l - 2))) // FullSimplify
g[3, 3]