$$U_{739}(x, y) = \frac{x^{2}}{\left(1 - y\right)^{6}} + \frac{2 x}{\left(1 - y\right)^{4}} + \frac{1}{\left(1 - y\right)^{2}}$$

$$T_{739}(n, m, k) = {\binom{2 k}{n}} {\binom{2 k + m + 2 n - 1}{m}}$$