Sum of divisors d of n such that n/d is odd.

Terms

a(0) =1a(1) =2a(2) =4a(3) =4a(4) =6a(5) =8a(6) =8a(7) =8a(8) =13a(9) =12a(10) =12a(11) =16a(12) =14a(13) =16a(14) =24a(15) =16a(16) =18a(17) =26a(18) =20a(19) =24a(20) =32a(21) =24a(22) =24a(23) =32a(24) =31a(25) =28a(26) =40a(27) =32a(28) =30a(29) =48