Index of n-th 1 in A022303.

Terms

a(0) =1a(1) =3a(2) =6a(3) =9a(4) =10a(5) =12a(6) =13a(7) =16a(8) =18a(9) =19a(10) =21a(11) =24a(12) =25a(13) =27a(14) =28a(15) =30a(16) =33a(17) =36a(18) =37a(19) =39a(20) =42a(21) =44a(22) =45a(23) =47a(24) =48a(25) =51a(26) =54a(27) =55a(28) =57a(29) =60