$$U_{285}(x, y) = \frac{\sqrt{3} \left(2 x + 2\right) \sin{\left(\frac{\operatorname{asin}{\left(\frac{3 \sqrt{3} \sqrt{y}}{2} \right)}}{3} \right)}}{3 \sqrt{y}}$$

$$T_{285}(n, m, k) = \frac{k {\binom{k}{n}} {\binom{k + 3 m - 1}{m}}}{k + 2 m}$$