a(n) = 5^n mod 73.

Terms

a(0) =1a(1) =5a(2) =25a(3) =52a(4) =41a(5) =59a(6) =3a(7) =15a(8) =2a(9) =10a(10) =50a(11) =31a(12) =9a(13) =45a(14) =6a(15) =30a(16) =4a(17) =20a(18) =27a(19) =62a(20) =18a(21) =17a(22) =12a(23) =60a(24) =8a(25) =40a(26) =54a(27) =51a(28) =36a(29) =34