Numbers k such that (35*10^k - 11)/3 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =5a(4) =6a(5) =7a(6) =14a(7) =21a(8) =27a(9) =34a(10) =53a(11) =72a(12) =96a(13) =145a(14) =168a(15) =191a(16) =192a(17) =309a(18) =393a(19) =502a(20) =667a(21) =1055a(22) =1534a(23) =1710a(24) =4171a(25) =4838a(26) =4950a(27) =9932a(28) =10860a(29) =11906