0,1/9,2/27,1/27,( )
27
7/9
5/18
4/243
17,27,39,( )
51
53
56
59
27,29,33,41,57,()
87
88
89
91
1,2,5,12,27,()
58
64
81
75
2187,729,243,81,27,( )
3
6
9
12
-27,-7,1,3,5,13,()
33
31
27
25
-1,64,27,343,( )。
81
256
986
1000
-1,27,8,125,( )
512
428
256
343
4,11,27,61,( )
106
117
131
163
1,3,3,9,27,( )
251
243
223
143