SOLUTION: find the missing number 1,2,6,22,86 --,---,----,? and which rule is used ?

SOLUTION: find the missing number 1,2,6,22,86 --,---,----,? and which rule is used ?

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Question 333969: find the missing number
1,2,6,22,86 --,---,----,?
and which rule is used ?
Answer by jrfrunner(365) (Show Source): You can put this solution on YOUR website!
in this series, where and i>0
---
for i=1,
for i=2,
for i=3,
for i=4,
for i=5,
----
for i=6,
for i=7,
for i=8,

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