Number of distinct terms in (x_1+\cdots+x_k)^n (Stars-and-bars: weak compositions of n into k parts)
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Stars-and-bars: weak compositions of n into k parts
What each symbol means
| Symbol | What it stands for |
|---|---|
| k | Number of summands |
| n | Total degree |
When to use this
Like terms collected; nonnegative integer exponents.