Numbers of the form p^3*q^2*r^2 where p, q, and r are distinct primes.

Terms

a(0) =1800a(1) =2700a(2) =3528a(3) =4500a(4) =5292a(5) =8712a(6) =9800a(7) =12168a(8) =12348a(9) =13068a(10) =18252a(11) =20808a(12) =24200a(13) =24500a(14) =25992a(15) =31212a(16) =33075a(17) =33800a(18) =34300a(19) =38088a(20) =38988a(21) =47432a(22) =47916a(23) =55125a(24) =57132a(25) =57800a(26) =60500a(27) =60552a(28) =66248a(29) =69192