IMO Shortlist 1981 problem 13
Dodao/la:
arhiva2. travnja 2012. Let

be a polynomial of degree

satisfying

Determine
%V0
Let $P$ be a polynomial of degree $n$ satisfying
$$P(k) = \binom{n+1}{k}^{-1} \qquad \text{ for } k = 0, 1, . . ., n.$$
Determine $P(n + 1).$
Izvor: Međunarodna matematička olimpijada, shortlist 1981