a(n) = prime(n)! / prime(n)# + 1.A103890a(n) = prime(n)! / prime(n)# + 1.Terms a(0) =2a(1) =2a(2) =5a(3) =25a(4) =17281a(5) =207361a(6) =696729601a(7) =12541132801External referencesoeis: A103890