a(n) = Sum_{k=1..n} binomial(n-1,k-1)*prime(k)*n!/k!.
A317421
a(n) = Sum_{k=1..n} binomial(n-1,k-1)*prime(k)*n!/k!.
Terms
- a(0) =2a(1) =7a(2) =35a(3) =223a(4) =1711a(5) =15283a(6) =155333a(7) =1766819a(8) =22205615a(9) =305275979a(10) =4553222111a(11) =73179347509
External references
- oeis: A317421