Least number m such that 6^m == +- 1 (mod 6n + 1).

Terms

a(0) =1a(1) =6a(2) =9a(3) =5a(4) =3a(5) =2a(6) =3a(7) =7a(8) =10a(9) =30a(10) =33a(11) =18a(12) =39a(13) =16a(14) =12a(15) =6a(16) =51a(17) =54a(18) =11a(19) =55a(20) =63a(21) =18a(22) =23a(23) =14a(24) =75a(25) =78a(26) =27a(27) =78a(28) =10a(29) =30