Pyramid #857
Pyramid #858
Pyramid #859
Generating function
$$U_{858}(x, y) = \frac{x + \left(y + 1\right)^{5}}{\left(y + 1\right)^{3}}$$
Explicit formula
$$T_{858}(n, m, k) = {\binom{k}{n}} {\binom{2 k - 5 n}{m}}$$
Data table
1 2 1 0 0 0 0
1 -3 6 -1 15 -21 28
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 #857: Right on x
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