Least number that is not a sum of distinct divisors of n.

Terms

a(0) =2a(1) =4a(2) =2a(3) =8a(4) =2a(5) =13a(6) =2a(7) =16a(8) =2a(9) =4a(10) =2a(11) =29a(12) =2a(13) =4a(14) =2a(15) =32a(16) =2a(17) =40a(18) =2a(19) =43a(20) =2a(21) =4a(22) =2a(23) =61a(24) =2a(25) =4a(26) =2a(27) =57a(28) =2a(29) =73