Positions of the flipped bits (here they are always set from 0 to 1) in the sequence A059661.

Terms

a(0) =0a(1) =2a(2) =4a(3) =3a(4) =12a(5) =5a(6) =14a(7) =27a(8) =8a(9) =25a(10) =30a(11) =31a(12) =36a(13) =13a(14) =18a(15) =131a(16) =60a(17) =133a(18) =458a(19) =247a(20) =1040a(21) =21a(22) =618a(23) =283a(24) =300a(25) =209a(26) =6282a(27) =19107a(28) =11792a(29) =3401