a(n) = 3^n mod 89.

Terms

a(0) =1a(1) =3a(2) =9a(3) =27a(4) =81a(5) =65a(6) =17a(7) =51a(8) =64a(9) =14a(10) =42a(11) =37a(12) =22a(13) =66a(14) =20a(15) =60a(16) =2a(17) =6a(18) =18a(19) =54a(20) =73a(21) =41a(22) =34a(23) =13a(24) =39a(25) =28a(26) =84a(27) =74a(28) =44a(29) =43