Numbers k such that 10^k - 117 is prime.

Terms

a(0) =3a(1) =4a(2) =6a(3) =7a(4) =9a(5) =15a(6) =27a(7) =40a(8) =72a(9) =134a(10) =170a(11) =204a(12) =237a(13) =240a(14) =285a(15) =288a(16) =592a(17) =613a(18) =1443a(19) =1524a(20) =2289a(21) =2292a(22) =16326a(23) =19492a(24) =31498a(25) =35312