Numbers k such that 2*13^k - 1 is prime.

Terms

a(0) =2a(1) =8a(2) =10a(3) =64a(4) =76a(5) =118a(6) =120a(7) =258a(8) =303a(9) =332a(10) =364a(11) =528a(12) =811a(13) =1270a(14) =1362a(15) =1607a(16) =2091a(17) =2572a(18) =3596a(19) =8190a(20) =34271a(21) =37860a(22) =37938