Numbers k such that (2^31-1)*(6^k) - 1 is prime.

Terms

a(0) =27a(1) =35a(2) =69a(3) =331a(4) =589a(5) =807a(6) =1641a(7) =1801a(8) =2057a(9) =2411a(10) =4443a(11) =4889a(12) =4999a(13) =5975a(14) =11935a(15) =43715