Numbers k such that (266*10^k - 11) / 3 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =7a(5) =9a(6) =10a(7) =14a(8) =28a(9) =58a(10) =93a(11) =121a(12) =135a(13) =207a(14) =350a(15) =423a(16) =602a(17) =859a(18) =1026a(19) =1864a(20) =1966a(21) =13738a(22) =23299a(23) =28126a(24) =38691a(25) =39403a(26) =47499a(27) =93577a(28) =124022a(29) =177577