Number of orbits of length n in map whose periodic points come from A059990.

Terms

a(0) =1a(1) =0a(2) =2a(3) =1a(4) =6a(5) =0a(6) =18a(7) =10a(8) =56a(9) =31a(10) =186a(11) =37a(12) =630a(13) =381a(14) =2182a(15) =1360a(16) =7710a(17) =511a(18) =27594a(19) =17459a(20) =99858a(21) =63457a(22) =364722a(23) =77650a(24) =1342176a(25) =860055a(26) =4971008a(27) =3195465a(28) =18512790a(29) =3975719