Semiprimes in A054552.

Terms

a(0) =86a(1) =298a(2) =371a(3) =1243a(4) =1541a(5) =2426a(6) =2627a(7) =3053a(8) =4258a(9) =5366a(10) =5663a(11) =6281a(12) =6602a(13) =6931a(14) =7613a(15) =8327a(16) =9073a(17) =9458a(18) =10661a(19) =13283a(20) =14702a(21) =15191a(22) =16706a(23) =18293a(24) =18838a(25) =23486a(26) =25361a(27) =26002a(28) =26651a(29) =27973