I am giving this question to see how much time people take to solve such problems and to know how the idea struck their minds . I solved but it took a lot of time(12 minutes) for the solution to strike my mind .I want to check how much time generally people take for these questions .

Find the next number in the sequence 

$83 , 121 , 16 , 49 , 169 ,256 , ......$

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> **Answerers please also share how much time it took to solve this problem** and also the possible ways you tried to finally arrive at
>  the answer . Maths is fun , sequence is more fun
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