Question 890021
3      -9      27      -53     103
-6     18      -26     50      103
12     -8      24      153
4      16      177
20     193
213
The sixth term could be 213

7      9       -17     44      -108
16     -8      27      -64     -108
8      19      -37     -172
27     -18     -209
9      -227
-218
The sixth term could be -218
2      5       14      42      126
7      19      56      168     126
26     75      224     294
101    299     518
400    817
1217
The sixth term could be 1217


7      14      -27     104     -308
21     -13     77      -204    -308
8      64      -127    -512
72     -63     -639
9      -702
-693
The sixth term could be -693