Numbers m such that m and 2*m + 9 both prime.

Terms

a(0) =2a(1) =5a(2) =7a(3) =11a(4) =17a(5) =19a(6) =29a(7) =31a(8) =37a(9) =47a(10) =59a(11) =61a(12) =71a(13) =79a(14) =101a(15) =107a(16) =109a(17) =127a(18) =131a(19) =137a(20) =149a(21) =151a(22) =179a(23) =211a(24) =227a(25) =229a(26) =239a(27) =241a(28) =257a(29) =269