Pyramid #1340
Pyramid #1341
Pyramid #1342
Generating function
$$U_{1341}(x, y) = x + \left(y + 1\right)^{4}$$
Explicit formula
$$T_{1341}(n, m, k) = {\binom{k}{n}} {\binom{4 k - 4 n}{m}}$$
Data table
1 4 6 4 1 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
0 0 0 0 0 0 0
Related
Pyramid #1343: Right on x
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