Position of n-th 1 in A031100.

Terms

a(0) =1a(1) =5a(2) =7a(3) =9a(4) =11a(5) =13a(6) =16a(7) =34a(8) =52a(9) =70a(10) =77a(11) =80a(12) =83a(13) =86a(14) =89a(15) =92a(16) =93a(17) =94a(18) =95a(19) =96a(20) =98a(21) =99a(22) =101a(23) =102a(24) =104a(25) =107a(26) =110a(27) =113a(28) =116a(29) =119