Number of orbits of the 3-step recursion mod n.

Terms

a(0) =1a(1) =4a(2) =3a(3) =12a(4) =5a(5) =12a(6) =9a(7) =44a(8) =21a(9) =20a(10) =25a(11) =36a(12) =15a(13) =66a(14) =15a(15) =172a(16) =53a(17) =84a(18) =21a(19) =60a(20) =27a(21) =144a(22) =23a(23) =132a(24) =105a(25) =116a(26) =183a(27) =482a(28) =177a(29) =60