Primes p such that 6!+p is also prime.

Terms

a(0) =7a(1) =13a(2) =19a(3) =23a(4) =31a(5) =37a(6) =41a(7) =53a(8) =67a(9) =89a(10) =101a(11) =103a(12) =107a(13) =109a(14) =137a(15) =139a(16) =157a(17) =163a(18) =167a(19) =191a(20) =199a(21) =227a(22) =233a(23) =251a(24) =257a(25) =263a(26) =271a(27) =277a(28) =293a(29) =311