Numbers k such that 10*k - 7 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =6a(5) =8a(6) =9a(7) =11a(8) =12a(9) =17a(10) =18a(11) =20a(12) =23a(13) =24a(14) =27a(15) =29a(16) =30a(17) =32a(18) =36a(19) =38a(20) =39a(21) =44a(22) =45a(23) =47a(24) =51a(25) =53a(26) =57a(27) =60a(28) =62a(29) =65