Position of card 1 after n-th shuffle in Guy's shuffling problem (A035485).

Terms

a(0) =1a(1) =2a(2) =4a(3) =1a(4) =2a(5) =4a(6) =8a(7) =1a(8) =2a(9) =4a(10) =8a(11) =16a(12) =7a(13) =14a(14) =28a(15) =25a(16) =17a(17) =34a(18) =31a(19) =23a(20) =5a(21) =10a(22) =20a(23) =40a(24) =31a(25) =11a(26) =22a(27) =44a(28) =31a(29) =3