Index of 2^n in A351495.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =16a(5) =26a(6) =52a(7) =100a(8) =200a(9) =394a(10) =788a(11) =1572a(12) =3144a(13) =6282a(14) =12564a(15) =25124a(16) =50248a(17) =100490a(18) =200980a(19) =401956a(20) =803912a(21) =1607818a(22) =3215636a(23) =6431268a(24) =12862536a(25) =25725066a(26) =51450132a(27) =102900260a(28) =205800520a(29) =411601034