Smallest abundant number with some prime powers fixed by n.

Terms

a(0) =12a(1) =945a(2) =20a(3) =18a(4) =12a(5) =5391411025a(6) =12a(7) =12a(8) =12a(9) =81081a(10) =12a(11) =70a(12) =12a(13) =6435a(14) =56a(15) =24a(16) =12a(17) =5775a(18) =12a(19) =18a(20) =20a(21) =945a(22) =12a(23) =20a(24) =20a(25) =945a(26) =18a(27) =18a(28) =12a(30) =12