-A-portion-of-Johns-parental-family-tree-is-shown-below-Find-a-rule-for-the-number-of-people-homework-help-

-A-portion-of-Johns-parental-family-tree-is-shown-below-Find-a-rule-for-the-number-of-people-homework-help-

A portion of John’s parental family tree is shown below. Find a rule for the number of people in the nth generation.