Numbers whose abundance is a power of 2.

Terms

a(0) =12a(1) =20a(2) =56a(3) =70a(4) =88a(5) =104a(6) =108a(7) =220a(8) =368a(9) =464a(10) =550a(11) =572a(12) =650a(13) =748a(14) =836a(15) =860a(16) =952a(17) =992a(18) =1232a(19) =1504a(20) =1672a(21) =1888a(22) =1952a(23) =2140a(24) =2392a(25) =2744a(26) =3708a(27) =4030a(28) =5336a(29) =5830