Pyramid #453
Generating function
$$U_{453}(x, y) = \frac{x + \left(y + 1\right)^{2}}{y + 1}$$
Explicit formula
$$T_{453}(n, m, k) = {\binom{k}{n}} {\binom{k - 2 n}{m}}$$
Data table
1 1 0 0 0 0 0
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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