Generating function
$$U_{265}(x, y) = - y + \frac{1}{1 - x}$$
Explicit formula
$$T_{265}(n, m, k) = \left(-1\right)^{m + n} {\binom{k}{m}} {\binom{k - m + n - 1}{n}}$$
| 1 | -1 | 0 | 0 | 0 | 0 | 0 |
| -1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| -1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| -1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 |
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