Numbers k such that (25*10^k + 71)/3 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =10a(5) =18a(6) =22a(7) =25a(8) =38a(9) =40a(10) =154a(11) =256a(12) =282a(13) =318a(14) =640a(15) =1095a(16) =1126a(17) =1214a(18) =2588a(19) =5616a(20) =13159a(21) =17644a(22) =18631a(23) =66714a(24) =75465