Numbers k such that 9*k! - 1 is prime.

Terms

a(0) =2a(1) =3a(2) =12a(3) =15a(4) =16a(5) =25a(6) =30a(7) =38a(8) =59a(9) =82a(10) =114a(11) =168a(12) =172a(13) =175a(14) =213a(15) =229a(16) =251a(17) =302a(18) =311a(19) =554a(20) =2538a(21) =3050a(22) =3363a(23) =12316