Numbers k such that 10^k*(2+3*10^k)+3 is prime.

Terms

a(0) =2a(1) =3a(2) =4a(3) =6a(4) =7a(5) =25a(6) =38a(7) =152a(8) =312a(9) =824a(10) =1195a(11) =1211a(12) =1335a(13) =2228a(14) =3435a(15) =3787a(16) =10317a(17) =11140a(18) =11239