Deficient numbers with increasing abundancy without being powers of 2.

Terms

a(0) =3a(1) =9a(2) =10a(3) =44a(4) =110a(5) =136a(6) =592a(7) =884a(8) =2144a(9) =8384a(10) =18632a(11) =32896a(12) =116624a(13) =391612a(14) =527872a(15) =1090912a(16) =2102272a(17) =8394752a(18) =15370304a(19) =73995392a(20) =536920064a(21) =815634435a(22) =2147516416a(23) =34360131584a(24) =217898810368a(25) =546409576448a(26) =549759483904