Generating function
$$U_{912}(x, y) = \frac{- x - 1}{y \left(2 x + 2\right) - 1}$$
Explicit formula
$$T_{912}(n, m, k) = \frac{2^{m} k {\binom{k + m}{m}} {\binom{k + m}{n}}}{k + m}$$
| 1 | 2 | 4 | 8 | 16 | 32 | 64 |
| 1 | 4 | 12 | 32 | 8 | 192 | 448 |
| 0 | 2 | 12 | 48 | 16 | 48 | 1344 |
| 0 | 0 | 4 | 32 | 16 | 64 | 224 |
| 0 | 0 | 0 | 8 | 8 | 48 | 224 |
| 0 | 0 | 0 | 0 | 16 | 192 | 1344 |
| 0 | 0 | 0 | 0 | 0 | 32 | 448 |
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