Numbers k such that (5 * 10^k - 119)/3 is prime.

Terms

a(0) =2a(1) =3a(2) =5a(3) =6a(4) =8a(5) =11a(6) =26a(7) =33a(8) =35a(9) =41a(10) =69a(11) =73a(12) =204a(13) =230a(14) =295a(15) =381a(16) =392a(17) =537a(18) =776a(19) =1187a(20) =2187a(21) =2426a(22) =4182a(23) =4589a(24) =5841a(25) =6107a(26) =11513a(27) =13431a(28) =28901a(29) =56256