Numbers k such that (436*10^k - 13)/9 is prime.

Terms

a(0) =0a(1) =5a(2) =8a(3) =9a(4) =12a(5) =39a(6) =68a(7) =78a(8) =98a(9) =200a(10) =218a(11) =359a(12) =1064a(13) =1127a(14) =1355a(15) =2868a(16) =4940a(17) =7236a(18) =12050a(19) =24708a(20) =47214a(21) =52683