Numbers k such that (199*10^k + 11)/3 is prime.

Terms

a(0) =2a(1) =3a(2) =8a(3) =10a(4) =13a(5) =19a(6) =20a(7) =26a(8) =37a(9) =39a(10) =232a(11) =308a(12) =381a(13) =382a(14) =706a(15) =872a(16) =1707a(17) =1929a(18) =2195a(19) =9211a(20) =15567a(21) =58306