Numbers k such that (44*10^k - 719)/9 is prime.

Terms

a(0) =2a(1) =4a(2) =11a(3) =14a(4) =25a(5) =55a(6) =89a(7) =131a(8) =644a(9) =2938a(10) =3338a(11) =4265a(12) =5200a(13) =6178a(14) =7075a(15) =10379a(16) =12830a(17) =26377a(18) =42947a(19) =98284a(20) =121297