Chernoff sequence: a(n) = Product_{k=1..n} prime(k)^(n-k+1).

A006939

Chernoff sequence: a(n) = Product_{k=1..n} prime(k)^(n-k+1).

Terms

    a(0) =1a(1) =2a(2) =12a(3) =360a(4) =75600a(5) =174636000

External references