Numbers k such that (38*10^k + 547)/9 is prime.

Terms

a(0) =1a(1) =3a(2) =4a(3) =9a(4) =10a(5) =13a(6) =19a(7) =21a(8) =25a(9) =28a(10) =70a(11) =81a(12) =97a(13) =106a(14) =291a(15) =369a(16) =460a(17) =577a(18) =4705a(19) =5427a(20) =7153a(21) =7191a(22) =7885a(23) =12070a(24) =20794a(25) =34855