Numbers with ordered prime signature (1,2).

Terms

a(0) =18a(1) =50a(2) =75a(3) =98a(4) =147a(5) =242a(6) =245a(7) =338a(8) =363a(9) =507a(10) =578a(11) =605a(12) =722a(13) =845a(14) =847a(15) =867a(16) =1058a(17) =1083a(18) =1183a(19) =1445a(20) =1587a(21) =1682a(22) =1805a(23) =1859a(24) =1922a(25) =2023a(26) =2523a(27) =2527a(28) =2645a(29) =2738