Order of the group SL(2,Z_n).

Terms

a(0) =1a(1) =6a(2) =24a(3) =48a(4) =120a(5) =144a(6) =336a(7) =384a(8) =648a(9) =720a(10) =1320a(11) =1152a(12) =2184a(13) =2016a(14) =2880a(15) =3072a(16) =4896a(17) =3888a(18) =6840a(19) =5760a(20) =8064a(21) =7920a(22) =12144a(23) =9216a(24) =15000a(25) =13104a(26) =17496a(27) =16128a(28) =24360a(29) =17280