Place where n-th 1 occurs in A023126.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =8a(8) =10a(9) =12a(10) =14a(11) =16a(12) =18a(13) =20a(14) =22a(15) =25a(16) =28a(17) =31a(18) =34a(19) =37a(20) =40a(21) =43a(22) =46a(23) =50a(24) =54a(25) =58a(26) =62a(27) =66a(28) =70a(29) =74