$$U_{297}(x, y) = \frac{\sqrt{3} \left(\sqrt{3} \sqrt{y} - \sqrt{- 8 \sqrt{3} x \sqrt{y} \sin{\left(\frac{\arcsin{\left(\frac{3 \sqrt{3} \sqrt{y}}{2} \right)}}{3} \right)} + 3 y}\right)}{6 x \sqrt{y}}$$

$$T_{297}(n, m, k) = \frac{k {\binom{k + 2 n - 1}{n}} {\binom{k + 3 m + n - 1}{m}}}{k + 2 m + n}$$