Fill in 6,4,8,14,22, (), (), () according to the rule. What is the rule?

Fill in 6,4,8,14,22, (), (), () according to the rule. What is the rule?


I haven't solved it for a long time. Is your topic wrong? If 4 is in front of 6, there are rules to follow. How can I feel that there are no rules behind!



1、2、4、8、32、64、…… What is the general term formula of?


The (n-1) power of Sn = 2