$$U_{29}(x, y) = \frac{1 - \sqrt{y \left(- 4 x^{2} - 4 x\right) + 1}}{2 x y}$$

$$T_{29}(n, m, k) = \frac{k {\binom{k + m}{- m + n}} {\binom{k + 2 m - 1}{m}}}{k + m}$$