Generating function
$$U_{1329}(x, y) = \frac{x}{1 - y} + \frac{1}{\left(1 - y\right)^{2}}$$
Explicit formula
$$T_{1329}(n, m, k) = {\binom{k}{n}} {\binom{2 k + m - n - 1}{m}}$$
Data table
1 2 3 4 5 6 7
1 1 1 1 1 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 0 0
0 0 0 0 0 0 0
Export
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