The fractional part function of a positive real number r, denoted as 
, is defined as: 
, where 
, is the floor of r. Thus, 
, 
and 
.
, is defined as: , where , is the floor of r. Thus, , and .Given a positive integer n, create the function 
, that evaluates the following summation:
, that evaluates the following summation:
For example for 
: 
: Please present the function output rounded-off to nearest 3 decimal places Therefore, for , the function should return 
.
, the function should return .---------------
NOTE: This is a follow-up problem to: Problem 53930. Easy Sequences 65: Fractional Part of Square Roots.
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