a(n) = Sum_{k=0..n} binomial(n+k-1,k) * (k! * Stirling1(n,k))^2.
A382853
a(n) = Sum_{k=0..n} binomial(n+k-1,k) * (k! * Stirling1(n,k))^2.
Terms
- a(0) =1a(1) =1a(2) =14a(3) =588a(4) =51064a(5) =7542780a(6) =1688795184a(7) =532244030976
External references
- oeis: A382853