A Staggering Sequence
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Public  11/10/17  8xp  Programming  5.9% 
Let the following sequence:
 $ c_1 = 2 $
 $ c_{n} = \frac { c_{n1} \times ( c_{n1} + n + 140)}{n} $
 What is the first index $n$ such as $c_n$ is not an integer?
 How many digits does the integer part of $c_n$ have?
Answer format: n,number of digits
[My timing : < 1 sec]
 $ c_1 = 2 $
 $ c_{n} = \frac { c_{n1} \times ( c_{n1} + n + 140)}{n} $
 What is the first index $n$ such as $c_n$ is not an integer?
 How many digits does the integer part of $c_n$ have?
Answer format: n,number of digits
[My timing : < 1 sec]
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