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

Terms

a(0) =3a(1) =4a(2) =6a(3) =12a(4) =14a(5) =54a(6) =74a(7) =102a(8) =114a(9) =302a(10) =318a(11) =366a(12) =614a(13) =1178a(14) =1188a(15) =3110a(16) =7284a(17) =21432a(18) =21906a(19) =25848a(20) =29882a(21) =38618a(22) =41990a(23) =84510a(24) =86022