Gauge finding rate 0,6, - 6,18, - 30,66. What's the tenth one

Gauge finding rate 0,6, - 6,18, - 30,66. What's the tenth one

Note the nth number as a (n), we can see such a relationship: a (n + 1) = - 2A (n) + 6
According to the recurrence relation a (n + 1) - 2 = - 2 (a (n) - 2)
We get a (n) = (- 2) ^ n + 2
So the tenth number is A10 = (- 2) ^ 10 + 2 = 1026
This sequence should also be: 0,6, - 6,18, - 30,66, - 126258, - 5101026, - 2046
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