Numbers n such that 7^n + 12 is prime.

Terms

a(0) =0a(1) =1a(2) =2a(3) =9a(4) =66a(5) =164a(6) =221a(7) =224a(8) =2058a(9) =3224a(10) =12284a(11) =13457a(12) =22277a(13) =22761a(14) =83381