Numbers k such that (26*10^k - 413)/9 is prime.

Terms

a(0) =3a(1) =4a(2) =6a(3) =12a(4) =15a(5) =19a(6) =36a(7) =40a(8) =484a(9) =576a(10) =2328a(11) =2841a(12) =4008a(13) =4878a(14) =5190a(15) =10149a(16) =10383a(17) =11982a(18) =21082a(19) =46324a(20) =61156a(21) =83638a(22) =125886