Numbers k such that 2*10^k - 69 is prime.

Terms

a(0) =2a(1) =3a(2) =5a(3) =8a(4) =30a(5) =50a(6) =52a(7) =120a(8) =160a(9) =215a(10) =260a(11) =306a(12) =537a(13) =539a(14) =10690a(15) =13888a(16) =15495a(17) =16874a(18) =18448a(19) =22233a(20) =59394a(21) =103749