$ h_i(x_1,\ldots,x_n) = \sum_{j_1+\cdots+j_n=i} \;\prod_{k=1}^n x_k^{j_k}$
I think I need a Partitions(i) to do it but I need some $j_k$ to be zero, then I tried PartitionTuples(level=n,size=i), and it still doesn't work.
Use something like that
sage: [v for v in IntegerVectors(n=4,k=3)]
[[4, 0, 0],
[3, 1, 0],
[3, 0, 1],
[2, 2, 0],
[2, 1, 1],
[2, 0, 2],
[1, 3, 0],
[1, 2, 1],
[1, 1, 2],
[1, 0, 3],
[0, 4, 0],
[0, 3, 1],
[0, 2, 2],
[0, 1, 3],
[0, 0, 4]]
Asked: 2018-10-24 22:48:34 +0100
Seen: 300 times
Last updated: Nov 04 '18
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Could you please provide your code ?