Numbers of the form p^3*q^3*r where p, q, and r are prime.

Terms

a(0) =1080a(1) =1512a(2) =2376a(3) =2808a(4) =3000a(5) =3672a(6) =4104a(7) =4968a(8) =6264a(9) =6696a(10) =6750a(11) =7000a(12) =7992a(13) =8232a(14) =8856a(15) =9288a(16) =10152a(17) =11000a(18) =11448a(19) =12744a(20) =13000a(21) =13176a(22) =13720a(23) =14472a(24) =15336a(25) =15768a(26) =17000a(27) =17064a(28) =17928a(29) =18522