Deficiency of the deficient or perfect numbers: m = 2n - sigma(n) for n such that m >= 0.

Terms

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