Interprimes (A024675) which are of the form s*prime, s=2.

Terms

a(0) =4a(1) =6a(2) =26a(3) =34a(4) =86a(5) =134a(6) =254a(7) =274a(8) =334a(9) =386a(10) =446a(11) =566a(12) =974a(13) =1126a(14) =1226a(15) =1234a(16) =1286a(17) =1294a(18) =1546a(19) =2066a(20) =2374a(21) =2386a(22) =2554a(23) =2854a(24) =2906a(25) =2966a(26) =3086a(27) =3326a(28) =3694a(29) =3898