Numbers n such that (prime(n)# + 4)/2 is a prime, where x# is the primorial A034386(x).

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =10a(6) =11a(7) =12a(8) =15a(9) =17a(10) =29a(11) =48a(12) =63a(13) =77a(14) =88a(15) =187a(16) =190a(17) =338a(18) =1133a(19) =1311a(20) =1832a(21) =2782a(22) =2907a(23) =3180a(24) =3272a(25) =5398a(26) =17530