Numbers k such that k!!!! + 1 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =6a(5) =18a(6) =38a(7) =56a(8) =94a(9) =118a(10) =148a(11) =286a(12) =1358a(13) =1480a(14) =1514a(15) =2680a(16) =2846a(17) =4078a(18) =4288a(19) =5612a(20) =5680a(21) =6440a(22) =6586a(23) =14614a(24) =30972a(25) =31690a(26) =54406