Numbers n such that (n! + 2)/2 is a prime.

Terms

a(0) =2a(1) =4a(2) =5a(3) =7a(4) =8a(5) =13a(6) =16a(7) =30a(8) =43a(9) =49a(10) =91a(11) =119a(12) =213a(13) =1380a(14) =1637a(15) =2258a(16) =4647a(17) =9701a(18) =12258