Those primitive elements of A337386 that have exactly one primitive nondeficient divisor (A006039).

Terms

a(0) =990a(1) =1170a(2) =4590a(3) =7650a(4) =8550a(5) =19470a(6) =23562a(7) =23868a(8) =26334a(9) =27324a(10) =27846a(11) =31050a(12) =31878a(13) =34452a(14) =35190a(15) =39330a(16) =40194a(17) =44370a(18) =47430a(19) =49590a(20) =53010a(21) =56610a(22) =60030a(23) =62730a(24) =63270a(25) =64170a(26) =65790a(27) =70110a(28) =71910a(29) =73530