Complete the series 4, 5, 12, 39, 160,...?

4 * 1 + 1 = 5

5 * 2 + 2 = 12

12 * 3 + 3 = 39

39 * 4 + 4 = 160

160 * 5 + 5 = 805

805 * 6 + 6 = 4836

4836 * 7 + 7 = 33859

The series 4 , 5 , 12 , 39 , 160 follows the given rule :-
the term ( n ) to be obtained is multiplied the ( n-1 )th term into ( n-1 ) and adding ( n-1 ).

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