Generating function
$$U_{885}(x, y) = \frac{y + 1}{\left(- x \left(y + 1\right) + 1\right)^{2}}$$
Explicit formula
$$T_{885}(n, m, k) = {\binom{k + n}{m}} {\binom{2 k + n - 1}{n}}$$
| 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2 | 4 | 2 | 0 | 0 | 0 | 0 |
| 3 | 9 | 9 | 3 | 0 | 0 | 0 |
| 4 | 16 | 24 | 16 | 4 | 0 | 0 |
| 5 | 25 | 5 | 5 | 25 | 5 | 0 |
| 6 | 36 | 9 | 12 | 9 | 36 | 6 |
| 7 | 49 | 147 | 245 | 245 | 147 | 49 |
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