Numbers k such that 6^k + 7 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =21a(6) =24a(7) =27a(8) =30a(9) =54a(10) =70a(11) =126a(12) =369a(13) =435a(14) =612a(15) =787a(16) =1275a(17) =2155a(18) =2436a(19) =5734a(20) =6016a(21) =16107a(22) =25786a(23) =34266a(24) =38841a(25) =45834a(26) =46584