Numbers k such that 3*10^k + 11 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =13a(5) =17a(6) =27a(7) =29a(8) =40a(9) =99a(10) =107a(11) =155a(12) =165a(13) =207a(14) =230a(15) =328a(16) =723a(17) =3854a(18) =20929a(19) =65247a(20) =85703a(21) =101065a(22) =186019