"DHK" (bracelet, identity, unlabeled) transform of 1,1,1,1,...

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =3a(6) =4a(7) =6a(8) =10a(9) =19a(10) =35a(11) =68a(12) =133a(13) =259a(14) =500a(15) =976a(16) =1868a(17) =3609a(18) =6911a(19) =13296a(20) =25456a(21) =48925a(22) =93786a(23) =180326a(24) =346432a(25) =667009a(26) =1284331a(27) =2477342a(28) =4781021a(29) =9240027