Pyramid #5
Pyramid #6
Pyramid #7
Generating function
$$U_{6}(x, y) = \frac{x}{1 - y} + y$$
Explicit formula
$$T_{6}(n, m, k) = {\binom{k}{n}} {\binom{- k + m + 2 n - 1}{- k + m + n}}$$
Data table
0 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
Related
Pyramid #5: Change x y
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