Numbers k such that (7*10^k - 313) / 9 is prime.

Terms

a(0) =2a(1) =3a(2) =5a(3) =6a(4) =9a(5) =14a(6) =18a(7) =21a(8) =24a(9) =27a(10) =29a(11) =83a(12) =513a(13) =555a(14) =750a(15) =843a(16) =1118a(17) =4494a(18) =5886a(19) =6968a(20) =9519a(21) =12290a(22) =15779a(23) =76536a(24) =76818a(25) =90371