Numbers k such that (13*10^k + 437)/9 is prime.

Terms

a(0) =2a(1) =3a(2) =6a(3) =14a(4) =17a(5) =29a(6) =41a(7) =44a(8) =87a(9) =213a(10) =354a(11) =840a(12) =972a(13) =1263a(14) =2018a(15) =2534a(16) =4868a(17) =7992a(18) =13676a(19) =18354a(20) =19304a(21) =40515a(22) =126638a(23) =135279