Pyramid #57
Pyramid #58
Pyramid #59
Generating function
$$U_{58}(x, y) = y + \left(x + 1\right)^{2}$$
Explicit formula
$$T_{58}(n, m, k) = {\binom{k}{m}} {\binom{2 k - 2 m}{n}}$$
Data table
1 1 0 0 0 0 0
2 0 0 0 0 0 0
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
Related
Pyramid #59: Left on x
Pyramid #60: Right on y
Pyramid #360: Change x y
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