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On k-factorials and Smarandacheials.
Abstract F. Smarandache defines a k-factorial as n(n - k)(n - 2k) ..., terminating when n - xk is positive and n - (x + 1)k is 0 or negative. Smarandacheials extend this definition into the negative numbers such that the factorial terminates when [absolute value of n - xk] is less than or equal to n and [absolute value ...
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