Is there a way in which the expression
$$ 1 + \sum_{i=0}^{n-2} \prod_{k=0}^{i} \dfrac{n-k}{r-k} $$
may be simplified?
It would simplify some equations I am working with.
Is there a way in which the expression
$$ 1 + \sum_{i=0}^{n-2} \prod_{k=0}^{i} \dfrac{n-k}{r-k} $$
may be simplified?
It would simplify some equations I am working with.