a(n) = 6^n mod 41.

Terms

a(0) =1a(1) =6a(2) =36a(3) =11a(4) =25a(5) =27a(6) =39a(7) =29a(8) =10a(9) =19a(10) =32a(11) =28a(12) =4a(13) =24a(14) =21a(15) =3a(16) =18a(17) =26a(18) =33a(19) =34a(20) =40a(21) =35a(22) =5a(23) =30a(24) =16a(25) =14a(26) =2a(27) =12a(28) =31a(29) =22