Pyramid #52
Generating function
$$U_{52}(x, y) = \frac{- x + y + 1}{\left(1 - x\right)^{2}}$$
Explicit formula
$$T_{52}(n, m, k) = {\binom{k}{m}} {\binom{k + m + n - 1}{n}}$$
Data table
1 1 0 0 0 0 0
1 2 0 0 0 0 0
1 3 0 0 0 0 0
1 4 0 0 0 0 0
1 5 0 0 0 0 0
1 6 0 0 0 0 0
1 7 0 0 0 0 0
Export
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