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MoebiusFn    --    Moebius function mu on the whole numbers

Syntax

MoebiusFn(N: INT): INT

Description

This function returns the value of the Moebius function mu at the point N. It represents the sum of the primitive N-th roots of unity and is always -1, 0, or 1.

Example

/**/ MoebiusFn(5); -1 /**/ MoebiusFn(8); 0 /**/ MoebiusFn(10); 1