Numbers k such that (5*10^k + 97)/3 is prime.

Terms

a(0) =2a(1) =3a(2) =4a(3) =38a(4) =46a(5) =76a(6) =82a(7) =166a(8) =180a(9) =236a(10) =909a(11) =1668a(12) =1884a(13) =2042a(14) =4602a(15) =9830a(16) =21939a(17) =23956