$$U_{487}(x, y) = \frac{2 \sqrt{3} \left(x + 1\right)^{2} \sin{\left(\frac{\operatorname{asin}{\left(\frac{3 \sqrt{3} \sqrt{y}}{2} \right)}}{3} \right)}}{3 \sqrt{y}}$$

$$T_{487}(n, m, k) = \frac{k {\binom{2 k}{n}} {\binom{k + 3 m - 1}{m}}}{k + 2 m}$$