k! + k# + 1 is prime, where k# is the primorial function.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =8a(7) =17a(8) =18a(9) =24a(10) =95a(11) =96a(12) =142a(13) =1022a(14) =1120a(15) =1580a(16) =6942a(17) =19255a(18) =19401