Generating function
$$U_{1017}(x, y) = \left(x + 1\right)^{3} \left(y + 1\right)$$
Explicit formula
$$T_{1017}(n, m, k) = {\binom{k}{m}} {\binom{3 k}{n}}$$
Data table
1 1 0 0 0 0 0
3 3 0 0 0 0 0
3 3 0 0 0 0 0
1 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
Export
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