In the following number series only one number is wrong. Find out the wrong number.
The pattern followed is :
4 $$\times 1 + 1$$ = 5 Â
5Â $$\times 2 + 2$$ =Â 12
12Â $$\times 3 + 3$$ =Â 39
39Â $$\times 4 + 4$$ =Â 160
160Â $$\times 5 + 5$$ =Â 805
805Â $$\times 6 + 6$$ =Â 4836
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