Problem 52467. Easy Sequences 2: Trigonometric function with integral input and output
The function 'F', defined as:
will always return an integer if the input is a natural number (in radians). Furthermore, since the cosine and sine of 0, are 1 and 0 respectively, therefore F(0) = 0. For a given natural number 'n' your task is to find the value of F(n).
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