Numbers having exactly four non-unitary prime factors.

Terms

a(0) =44100a(1) =88200a(2) =108900a(3) =132300a(4) =152100a(5) =176400a(6) =213444a(7) =217800a(8) =220500a(9) =260100a(10) =264600a(11) =298116a(12) =304200a(13) =308700a(14) =324900a(15) =326700a(16) =352800a(17) =396900a(18) =426888a(19) =435600a(20) =441000a(21) =456300a(22) =476100a(23) =485100a(24) =509796a(25) =520200a(26) =529200a(27) =544500a(28) =573300a(29) =592900