Numbers k such that k!3 - 3^2 is prime, where k!3 = k!!! is a triple factorial number (A007661).

Terms

a(0) =7a(1) =8a(2) =10a(3) =13a(4) =16a(5) =17a(6) =20a(7) =23a(8) =28a(9) =29a(10) =32a(11) =43a(12) =46a(13) =47a(14) =53a(15) =56a(16) =59a(17) =61a(18) =76a(19) =95a(20) =107a(21) =139a(22) =148a(23) =218a(24) =349a(25) =764a(26) =1009a(27) =1130a(28) =1183a(29) =1429