Question 893952
You can try. It is not  a straight geometric nor  a straight arithmetic series.
the columns are differences
geometric ratios
1.5 0.22222222 6.5 0.76923077 0.3

There is no real distinguishable arithmetic pattern

6      3       -10      28     -60     102
9      -7      18      -32     42      102
2      11      -14     10      144
13     -3      -4      154
10     -7      150
3      143
146
7th term could be 146