a(n) = Product_{k=1..n} |Stirling1(n,k)| * k!.

A308941

a(n) = Product_{k=1..n} |Stirling1(n,k)| * k!.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =72a(4) =114048a(5) =14515200000

External references