Numbers n such that 243*2^n-1 is prime.

Terms

a(0) =2a(1) =6a(2) =8a(3) =11a(4) =12a(5) =18a(6) =24a(7) =27a(8) =36a(9) =38a(10) =44a(11) =56a(12) =58a(13) =62a(14) =116a(15) =134a(16) =162a(17) =242a(18) =274a(19) =348a(20) =358a(21) =478a(22) =512a(23) =548a(24) =658a(25) =824a(26) =1242a(27) =1287a(28) =1531a(29) =2846