Numbers k such that (13*10^k + 107)/3 is prime.

Terms

a(0) =1a(1) =5a(2) =7a(3) =9a(4) =16a(5) =39a(6) =87a(7) =127a(8) =129a(9) =132a(10) =226a(11) =228a(12) =327a(13) =772a(14) =1191a(15) =1689a(16) =4953a(17) =5143a(18) =25121a(19) =26327a(20) =52861a(21) =60966