"CFK" (necklace, size, unlabeled) transform of 1,3,5,7...

Terms

a(0) =1a(1) =1a(2) =3a(3) =8a(4) =12a(5) =31a(6) =71a(7) =128a(8) =230a(9) =555a(10) =1437a(11) =2248a(12) =4646a(13) =8137a(14) =18279a(15) =49590a(16) =76264a(17) =144351a(18) =264615a(19) =474526a(20) =953766a(21) =2712603a(22) =3931785a(23) =7491022a(24) =12745506a(25) =23133569a(26) =38434487a(27) =76679812a(28) =208933080a(29) =301358215