Number of steps to go from 2^(n+1)-1 to (2^n)-1 using the iterative process described in A071542.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =9a(6) =17a(7) =30a(8) =54a(9) =98a(10) =179a(11) =330a(12) =614a(13) =1150a(14) =2162a(15) =4072a(16) =7678a(17) =14496a(18) =27418a(19) =51979a(20) =98800a(21) =188309a(22) =359889a(23) =689649a(24) =1325006a(25) =2552031a(26) =4926589a(27) =9529551a(28) =18463098a(29) =35815293