Numbers k such that (19*10^k + 413)/9 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =11a(5) =22a(6) =28a(7) =29a(8) =38a(9) =62a(10) =316a(11) =989a(12) =1532a(13) =2068a(14) =2495a(15) =3431a(16) =4775a(17) =9082a(18) =14935a(19) =15572a(20) =39511a(21) =43283a(22) =66748