Numbers k such that k!!! + 1 is prime (0 is included by convention).

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =5a(5) =6a(6) =7a(7) =9a(8) =10a(9) =11a(10) =17a(11) =24a(12) =29a(13) =39a(14) =40a(15) =57a(16) =58a(17) =59a(18) =91a(19) =155a(20) =175a(21) =245a(22) =359a(23) =372a(24) =597a(25) =864a(26) =977a(27) =1077a(28) =1327a(29) =2076