Numbers k such that 9*k - 7 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =10a(5) =12a(6) =16a(7) =20a(8) =22a(9) =26a(10) =30a(11) =32a(12) =36a(13) =40a(14) =44a(15) =50a(16) =52a(17) =54a(18) =64a(19) =66a(20) =72a(21) =74a(22) =76a(23) =92a(24) =94a(25) =96a(26) =102a(27) =104a(28) =106a(29) =110