$$U_{129}(x, y) = \frac{1}{\sqrt{x^{2} y^{2} - 2 x^{2} y + x^{2} - 2 x y - 2 x + 1}}$$

$$T_{129}(n, m, k) = \frac{{\binom{\frac{k}{2} + n - \frac{1}{2}}{m}} {\binom{\frac{k}{2} + n - \frac{1}{2}}{\frac{k}{2} + m - \frac{1}{2}}} {\binom{k + n - 1}{\frac{k}{2} - \frac{1}{2}}}}{{\binom{k - 1}{\frac{k}{2} - \frac{1}{2}}}}$$