a(n) = n! * Sum_{k=1..n} (-1)^(n-k) * Stirling1(n,k) * H(k), where H(k) is the k-th harmonic number.
A354685
a(n) = n! * Sum_{k=1..n} (-1)^(n-k) * Stirling1(n,k) * H(k), where H(k) is the k-th harmonic number.
Terms
- a(0) =0a(1) =1a(2) =5a(3) =50a(4) =854a(5) =22354a(6) =833244a(7) =41974176a(8) =2748169584a(9) =226916044848
External references
- oeis: A354685