Semiprime terms in A136047.

Terms

a(0) =185a(1) =497a(2) =511a(3) =1041a(4) =1059a(5) =1903a(6) =3107a(7) =4705a(8) =4735a(9) =6817a(10) =9481a(11) =12761a(12) =16721a(13) =33379a(14) =48961a(15) =49027a(16) =68857a(17) =80561a(18) =80639a(19) =93521a(20) =179503a(21) =201241a(22) =250097a(23) =306281a(24) =306403a(25) =405551a(26) =482161a(27) =482303a(28) =523921a(29) =885631