Position of n in A026259.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =8a(5) =9a(6) =4a(7) =6a(8) =7a(9) =13a(10) =15a(11) =18a(12) =10a(13) =11a(14) =12a(15) =22a(16) =23a(17) =25a(18) =28a(19) =14a(20) =16a(21) =17a(22) =32a(23) =33a(24) =35a(25) =19a(26) =20a(27) =21a(28) =40a(29) =41