Pyramid #184
Generating function
$$U_{184}(x, y) = \frac{1 - y}{x + 1}$$
Explicit formula
$$T_{184}(n, m, k) = \frac{\left(-1\right)^{- m + n} k {\binom{k + n}{m + n}} {\binom{m + n}{n}}}{k + n}$$
Data table
1 -1 0 0 0 0 0
-1 1 0 0 0 0 0
1 -1 0 0 0 0 0
-1 1 0 0 0 0 0
1 -1 0 0 0 0 0
-1 1 0 0 0 0 0
1 -1 0 0 0 0 0
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