Numbers k such that (41*10^k + 49)/9 is prime.

Terms

a(0) =2a(1) =3a(2) =6a(3) =20a(4) =26a(5) =38a(6) =51a(7) =119a(8) =155a(9) =218a(10) =446a(11) =486a(12) =1211a(13) =1319a(14) =1338a(15) =1365a(16) =1575a(17) =5106a(18) =7019a(19) =9503a(20) =9695a(21) =14304a(22) =15417a(23) =17765a(24) =24222a(25) =25500a(26) =26306a(27) =35238a(28) =93207