Position of n-th 1 in A031007.

Terms

a(0) =1a(1) =8a(2) =9a(3) =10a(4) =12a(5) =14a(6) =16a(7) =18a(8) =20a(9) =23a(10) =37a(11) =51a(12) =65a(13) =79a(14) =93a(15) =94a(16) =96a(17) =99a(18) =102a(19) =105a(20) =108a(21) =111a(22) =113a(23) =114a(24) =115a(25) =116a(26) =117a(27) =119a(28) =120a(29) =122