"CGK" (necklace, element, unlabeled) transform of 1,2,3,4,...

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =8a(5) =17a(6) =34a(7) =63a(8) =130a(9) =255a(10) =512a(11) =1011a(12) =2054a(13) =4057a(14) =7990a(15) =16261a(16) =31870a(17) =63341a(18) =124692a(19) =247123a(20) =487028a(21) =952439a(22) =1866764a(23) =3640427a(24) =7134760a(25) =13808661a(26) =26792704a(27) =51847089a(28) =100150988a(29) =192939285