Let , F(b[1], b[2]), be the (unnormalized) weight

    of the range of, [[1, 0, 0, 1, 1], [0, 1, 1, 1, 1]], being , [b[1], b[2]]

           It satisfies the following pure linear recurrece equations

                         with polynomial coefficients

     F(b[1], b[2])       (-9 b[2] + 4 + 9 b[1]) F(1 + b[1], b[2])
-9/5 ------------- + 1/5 ----------------------------------------
       2 + b[1]                          2 + b[1]

     + F(2 + b[1], b[2]) = 0



  45 F(b[1], b[2])   (9 b[1] - 4 - 9 b[2]) F(b[1], b[2] + 1)
- ---------------- - ---------------------------------------
      b[2] + 2                      b[2] + 2

     + F(b[1], b[2] + 2) = 0



            These recurrences enable to compute, in linear time any

                        desired value of , F(b[1], b[2])

                        subject to the inital conditions

                          [[14, 115/2], [23/2, 367/4]]