Position of n-th 1 in A031057.

Terms

a(0) =1a(1) =5a(2) =6a(3) =7a(4) =9a(5) =11a(6) =14a(7) =22a(8) =30a(9) =38a(10) =46a(11) =54a(12) =61a(13) =63a(14) =64a(15) =67a(16) =70a(17) =73a(18) =74a(19) =75a(20) =76a(21) =77a(22) =79a(23) =80a(24) =82a(25) =83a(26) =85a(27) =87a(28) =88a(29) =91