6427575domain: NAppears in sequencesExpansion of x^k/Product_{t=k..2k} (1-tx) for k=5.at n=10A1434005-Stirling numbers of the second kind.at n=60A193685a(n) = [x^n] 1/Product_{k=0..n} (1 - (n+k)*x).at n=5A383869