Numbers n such that !n + 7 is prime.

Terms

a(0) =0a(1) =3a(2) =4a(3) =5a(4) =7a(5) =10a(6) =12a(7) =20a(8) =37a(9) =52a(10) =73a(11) =149a(12) =304a(13) =540a(14) =2135a(15) =7112a(16) =7436a(17) =9357