Numbers k such that (2*10^k - 71)/3 is prime.

Terms

a(0) =2a(1) =3a(2) =5a(3) =6a(4) =8a(5) =11a(6) =15a(7) =25a(8) =38a(9) =54a(10) =101a(11) =105a(12) =158a(13) =295a(14) =303a(15) =389a(16) =482a(17) =558a(18) =693a(19) =1965a(20) =3503a(21) =9818a(22) =13255a(23) =30351a(24) =51285a(25) =54767a(26) =57384a(27) =88808a(28) =109645a(29) =174301