Problem #450

A Staggering Sequence
Public 11/10/17 8xp Programming 5.1%

Let the following sequence:
- $ c_1 = 2 $
- $ c_{n} = \frac { c_{n-1} \times ( c_{n-1} + 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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