Pyramid #1347
Pyramid #1348
Pyramid #1349
Generating function
$$U_{1348}(x, y) = x \left(y + 1\right)^{4} + 1$$
Explicit formula
$$T_{1348}(n, m, k) = {\binom{k}{n}} {\binom{4 n}{m}}$$
Data table
1 0 0 0 0 0 0
1 4 6 4 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
Related
Pyramid #1349: Right on x
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