Deficiency of n-th deficient number: 2k - sigma(k) for k such that this is > 0.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =4a(5) =6a(6) =1a(7) =5a(8) =2a(9) =10a(10) =12a(11) =4a(12) =6a(13) =1a(14) =16a(15) =18a(16) =10a(17) =8a(18) =22a(19) =19a(20) =10a(21) =14a(22) =28a(23) =30a(24) =1a(25) =18a(26) =14a(27) =22a(28) =36a(29) =16