Generating function
$$U_{1114}(x, y) = \left(\frac{x \left(1 - \sqrt{1 - 4 y}\right)^{3}}{8 y^{3}} + 1\right)^{2}$$
Explicit formula
$$T_{1114}(n, m, k) = \begin{cases}1&\text{if n=0,m=0} ,\ \\\frac{3 n {\binom{2 k}{n}} {\binom{2 m + 3 n - 1}{m}}}{m + 3 n} \end{cases} $$
1 | 0 | 0 | 0 | 0 | 0 | 0 |
2 | 6 | 18 | 56 | 18 | 594 | 2002 |
1 | 6 | 27 | 11 | 429 | 1638 | 6188 |
0 | 0 | 0 | 0 | 0 | 0 | 0 |
0 | 0 | 0 | 0 | 0 | 0 | 0 |
0 | 0 | 0 | 0 | 0 | 0 | 0 |
0 | 0 | 0 | 0 | 0 | 0 | 0 |
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