Numerator of Sum_{k=1..n-1} 1/k^n.A120347Numerator of Sum_{k=1..n-1} 1/k^n.Terms a(0) =1a(1) =9a(2) =1393a(3) =257875a(4) =47463376609a(5) =940908897061External referencesoeis: A120347