Generating function
$$U_{208}(x, y) = y \left(x + 1\right) + \left(x + 1\right)^{2}$$
Explicit formula
$$T_{208}(n, m, k) = {\binom{k}{m}} {\binom{2 k - m}{n}}$$
| 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2 | 1 | 0 | 0 | 0 | 0 | 0 |
| 1 | 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 | 0 | 0 | 0 | 0 | 0 | 0 |
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