Pyramid #119
Generating function
$$U_{119}(x, y) = - \frac{\sqrt{4 x + 1}}{y - 1}$$
Explicit formula
$$T_{119}(n, m, k) = 4^{n} {\binom{\frac{k}{2}}{n}} {\binom{k + m - 1}{m}}$$
Data table
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
0 0 0 0 0 0 0
Export
expand_less