$$U_{1160}(x, y) = \frac{\left(1 - \sqrt{- 4 x \left(y + 1\right)^{2} + 1}\right)^{2}}{4 x^{2} \left(y + 1\right)^{4}}$$

$$T_{1160}(n, m, k) = \frac{2 k {\binom{2 n}{m}} {\binom{2 k + 2 n - 1}{n}}}{2 k + n}$$