[Solved] Given d ( n , k ) is the number of derang

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Given d ( n , k ) is the number of derangements of length n composed of k cycles. Derive the formula for d (

Given

d (n, k)

is the number of derangements of length

n

composed of

k

cycles. Derive the formula for

d (n, k)

using the unsigned Stirling numbers of the first kind.

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