Numbers n such that primorial(n)/2 - 512 is prime.

Terms

a(0) =5a(1) =6a(2) =9a(3) =10a(4) =11a(5) =12a(6) =17a(7) =18a(8) =23a(9) =36a(10) =48a(11) =62a(12) =87a(13) =112a(14) =131a(15) =400a(16) =1606a(17) =6136a(18) =6519a(19) =11700