Semiprimes in A054567.

Terms

a(0) =6a(1) =69a(2) =106a(3) =265a(4) =334a(5) =411a(6) =589a(7) =799a(8) =1041a(9) =1174a(10) =1315a(11) =1959a(12) =2329a(13) =3394a(14) =4659a(15) =5221a(16) =5815a(17) =7099a(18) =8146a(19) =8511a(20) =10869a(21) =16449a(22) =21979a(23) =23181a(24) =23794a(25) =25681a(26) =26326a(27) =31774a(28) =33949a(29) =35439