a(n) = Product_{i=1..n-1} (Product_{k=1..i} p_k + Product_{k=i+1..n} p_k).
A111392
a(n) = Product_{i=1..n-1} (Product_{k=1..i} p_k + Product_{k=i+1..n} p_k).
Terms
- a(0) =2a(1) =5a(2) =187a(3) =162319a(4) =10697595389
External references
- oeis: A111392