Integers k such that 10^k+49 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =8a(5) =17a(6) =24a(7) =32a(8) =65a(9) =66a(10) =67a(11) =79a(12) =83a(13) =98a(14) =152a(15) =260a(16) =781a(17) =1225a(18) =1777a(19) =2023a(20) =2411a(21) =3469a(22) =5347a(23) =10646a(24) =11335a(25) =13989a(26) =14792a(27) =16731a(28) =19015a(29) =29471